Re: [Emc-users] OT: Possible Retrofit candidate for someone in the heartland
On Mon, Jan 23, 2012 at 10:20 PM, Stuart Stevenson stus...@gmail.comwrote: The motor was probably removed by the same process that modified the control boxes. That's pretty sad to see. It really looks like the whole thing has been on its side, and it's hard to believe there isn't significant damage to the important stuff as a result. The lathes they sell at Penn State surplus usually have been on their top, but they usually manage to keep the mills upright. When I was in the Air Force, they used to keep the surplus machine tools outside, uncovered and rusting. That used to drive me nuts even though I had no place to put one at the time. Eric Keller Boalsburg, Pennsylvania -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] [OT]Moveing pcb-gcode generated files to the milling machine=huge PIMA
On 01/23/2012 02:16 PM, gene heskett wrote: Thanks Mark, but I think NFS is going to solve my problems in that regard. After 14 years of failure, I made it work, with a lot of help from this list, this morning. Sweet! Shame on the man page writers for abstracting the requirements till nobody but a 40 year experienced unix guru could translate that gibberish into something usable. Cheers, Gene Gene, Wholeheartedly agree on man pages being cryptic, and at times, quite abstract. Best online help pages I ever used were on VMS machines. Mark -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] OT: Possible Retrofit candidate for someone in the heartland
On 22 January 2012 08:07, a...@conceptmachinery.com wrote: why retrofit bridgeport machine when one can buy cnc machine X 50 Y 26 travel CNC mill for $6.5 k That machine cost $85k new, so the standard of bearings, castings, screws etc is likely to be a lot better than a built-down-to-a-price $6.5k machine. Given that we (collectively) know how to build CNC controls very cheaply the damage to the contoller is largely irrelevant. Some info on the brand, who still exist: http://www.lathes.co.uk/index/ -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Open letter to the EMC Board of Directors
2012/1/24 gene heskett ghesk...@wdtv.com On Monday, January 23, 2012 11:57:10 PM Jeff Epler did opine: Michael, I would like to address your concerns over the quality of the rebranding changes and the degree of consideration that they were given before they were made. I can speak only for myself here, and I have my linuxcnc developer hat on as I write this.. I don't have any trouble admitting that some of the changes I've pushed to v2.5_branch since the announcement may have been hasty and may require fine-tuning, if not outright reversion. Personally, I felt like a huge burden had been lifted from me by the announcement; now I could finally *do something* about this problem that has been hanging over our project for months. On the other hand, I still think the approach of starting by renaming stuff and then fixing what broke was the right one. If I had waited to push the changes until they were perfect, collaborating with my fellow developers would have been more difficult. Also in retrospect, a rebranding branch would have been a good idea (allowing collaboration while not leaving v2.5_branch unstable for days and days) but that, too, is water under the bridge. Starting a branch now will not benefit anyone, since v2.5_branch would be just as broken as it is now until the rebranding branch was merged. (and reverting the v2.5_branch to before the rebranding seems a very severe choice, because many people have already pulled these commits) The v2.5_branch is actually in pretty good shape now, AFAIK. Where it's not, let's talk about and address the specific technical issues. I hope that you will continue in supporting and contributing to our project. Jeff I both agree and disagree. I do think that LinuxCNC is a better name than EMC2, but I think a renaming process could have been handled differently. I also think that the communication and evolution of EMC2/LinuxCNC has decreased a lot. See this as a good time to restart this project! 1. Andy's idea of a white/black list is a VERY good start to proceed and to make this a fresh restart. Just do it. 2. Make a public Roadmap! Best case, make it voteable. I rather see 2 known-to-public well implemented features than 10 halfway coded surprises. 3. There are too many info channels! Close down the forum on the LinuxCNC website ASAP! It doesn't work, Google can't make correct forward links and some browsers fail to show it. There is an active forum at cnczone (I'll fix the renaming), there's a working mailing list (also active). There is a more or less dead website, the wiki is somewhat updated but still there are obsolete chapters or dead links (I promise to update the wiki myself more frequently in the future). At last, I will not put any energy into a debate about right or wrong name. I see this as an opportunity to make a restart and make this fantastic system better and future secured. Many people have spent so many hours in this project and we should take care of that! Regards, Sven -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Communication Channels (Was: An Open Letter...)
On 24 January 2012 13:47, Sven Wesley svenne.d...@gmail.com wrote: 3. There are too many info channels! Close down the forum on the LinuxCNC website ASAP! It doesn't work, Google can't make correct forward links and some browsers fail to show it. There is an active forum at cnczone I disagree. I don't like the linuxcnc forum particularly (I don't really like forums in general) but it is the first port of call for help for many new users. Many folk do go straight to the website of a package they have downloaded and look for the forum. The LinuxCNC forum shows 14,000 posts to 8,000 for the cnczone one. I (personally) find the cnczone forum rather hard to find, at the end of a very long list, and I don't think that the sub-forums are broken down small enough. I agree that it is a pity that the activity is split between two forums, but I don't think that closing either of them down is the right solution. I wonder if there is any way to link them? -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Communication Channels (Was: An Open Letter...)
On 24 January 2012 13:47, Sven Wesley svenne.d...@gmail.com wrote: Google can't make correct forward links I just tried a search for something I knew would find the LinuxCNC website forum, and it worked fine. Can you elaborate on this point? -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Communication Channels (Was: An Open Letter...)
On mar, 2012-01-24 at 14:10 +, andy pugh wrote: On 24 January 2012 13:47, Sven Wesley svenne.d...@gmail.com wrote: 3. There are too many info channels! Close down the forum on the LinuxCNC website ASAP! It doesn't work, Google can't make correct forward links and some browsers fail to show it. There is an active forum at cnczone I disagree. I don't like the linuxcnc forum particularly (I don't really like forums in general) but it is the first port of call for help for many new users. Many folk do go straight to the website of a package they have downloaded and look for the forum. The LinuxCNC forum shows 14,000 posts to 8,000 for the cnczone one. I (personally) find the cnczone forum rather hard to find, at the end of a very long list, and I don't think that the sub-forums are broken down small enough. I agree that it is a pity that the activity is split between two forums, but I don't think that closing either of them down is the right solution. I wonder if there is any way to link them? I agree with you. Mailing list, IRC and Forum are three different things, and all of them are important. The forum is good because a discussion stay there, and every newcomers can read from others errors and success. is the base of the wiki. when you see other wikis, many times near an explanation there's the link to the discussion that bringed (brought?..sorry..) to the explanation. This way, if my case is a little different from the wiki's i can better dig into the situation. -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Open letter to the EMC Board of Directors
Why on earth would you want to close down the LinuxCNC forum and shift to a commercial laden for profit forum? There is nothing more annoying that waiting for all the commercials to load and clutter up your screen at the zone. Do you work for or derive profit the zone? John On 1/24/2012 7:47 AM, Sven Wesley wrote: 2012/1/24 gene heskettghesk...@wdtv.com On Monday, January 23, 2012 11:57:10 PM Jeff Epler did opine: Michael, I would like to address your concerns over the quality of the rebranding changes and the degree of consideration that they were given before they were made. I can speak only for myself here, and I have my linuxcnc developer hat on as I write this.. I don't have any trouble admitting that some of the changes I've pushed to v2.5_branch since the announcement may have been hasty and may require fine-tuning, if not outright reversion. Personally, I felt like a huge burden had been lifted from me by the announcement; now I could finally *do something* about this problem that has been hanging over our project for months. On the other hand, I still think the approach of starting by renaming stuff and then fixing what broke was the right one. If I had waited to push the changes until they were perfect, collaborating with my fellow developers would have been more difficult. Also in retrospect, a rebranding branch would have been a good idea (allowing collaboration while not leaving v2.5_branch unstable for days and days) but that, too, is water under the bridge. Starting a branch now will not benefit anyone, since v2.5_branch would be just as broken as it is now until the rebranding branch was merged. (and reverting the v2.5_branch to before the rebranding seems a very severe choice, because many people have already pulled these commits) The v2.5_branch is actually in pretty good shape now, AFAIK. Where it's not, let's talk about and address the specific technical issues. I hope that you will continue in supporting and contributing to our project. Jeff I both agree and disagree. I do think that LinuxCNC is a better name than EMC2, but I think a renaming process could have been handled differently. I also think that the communication and evolution of EMC2/LinuxCNC has decreased a lot. See this as a good time to restart this project! 1. Andy's idea of a white/black list is a VERY good start to proceed and to make this a fresh restart. Just do it. 2. Make a public Roadmap! Best case, make it voteable. I rather see 2 known-to-public well implemented features than 10 halfway coded surprises. 3. There are too many info channels! Close down the forum on the LinuxCNC website ASAP! It doesn't work, Google can't make correct forward links and some browsers fail to show it. There is an active forum at cnczone (I'll fix the renaming), there's a working mailing list (also active). There is a more or less dead website, the wiki is somewhat updated but still there are obsolete chapters or dead links (I promise to update the wiki myself more frequently in the future). At last, I will not put any energy into a debate about right or wrong name. I see this as an opportunity to make a restart and make this fantastic system better and future secured. Many people have spent so many hours in this project and we should take care of that! Regards, Sven -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Open letter to the EMC Board of Directors
On 1/24/2012 8:47 AM, Sven Wesley wrote: 3. There are too many info channels! Close down the forum on the LinuxCNC website ASAP! It doesn't work, Google can't make correct forward links and some browsers fail to show it. There is an active forum at cnczone (I'll fix the renaming), there's a working mailing list (also active). There is a more or less dead website, the wiki is somewhat updated but still there are obsolete chapters or dead links (I promise to update the wiki myself more frequently in the future). I had a thesis adviser who was fond of quoting from Chairman Mao Letting a hundred flowers blossom and a hundred schools of thought contend is the policy for promoting progress in the arts and the sciences and a flourishing socialist culture in our land. (Frequently restated as let a thousand flowers bloom.) The Internet seems to agree. People use the method of communication that best suits them. There are lots of people, resulting in lots of channels. It seems to me that this plethora of information channels functions pretty well in normal times. The only thing that I would wish for is a synoptic function, similar to what happens with news.ycombinator.com, so in one place I could get a feel for what's happening without having to wade through all the channels myself. But who would do it and how would we ensure it is done any better? It is the current climate of rapid change that stresses multiple channels because it takes a finite amount of time for the changes to propagate, frequently leaving the channels out of synch. I personally favor the email lists and the Wiki. I've spent time reading and editing the Wiki. It suffers no more and no less than the other channels you mention. Many people touch the core topics, few---perhaps only the author---touch the pages on the peripheral topics. Many become irrelevant with the passage of time but they represent our thinking over time. Rather than either struggling to keep each and every page up-to-date, which in some cases is akin to putting lipstick on a pig, or simply deleting them, which is a denial of our history, I favor following the pattern used by some contributors and marking them as obsolete, deprecated, or whatever and point to the alternative. The website could be subsumed into the Wiki but I don't see the need. It is perfectly serviceable as the first point of contact. It could use more active administration, for example the rebranding certainly qualifies as NEWS, but I think the changes that have transpired over the last year have left it in good shape. Just my 2 cents worth. Regards, Kent -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Rotary homing.
On Tue, 2012-01-24 at 00:12 -0500, gene heskett wrote: Its doing all moves on the .bot. files in negative X from the reference point I'm pretty sure there's a checkbox along the way that reads Mirror X axis to make that answer come out right without any further attention. The Eagle gerbv274x CAM file has a mirror option that might do exactly what you need. Probably applies only to the bottom layer, though. [*fails to install pcb2gcode due to dependency hell*] The pcb2gcode man page seems to imply (in --mirror-absolute) that backside mirroring normally takes place at the middle of the board. Perhaps you have one or more of: - the Eagle origin at the wrong spot - the backside Gerber file exported without mirroring - the --mirror-absolute option set/unset I'd expect some option twiddling would solve the problem without resort to G-Code hackage. After all, you're not the first person to mill the backside of a PCB with this tool chain! And you really need an automatic tool height probe switch... really you do! -- Ed http://softsolder.com -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Communication Channels (Was: An Open Letter...)
On Tue, Jan 24, 2012 at 9:10 AM, andy pugh bodge...@gmail.com wrote: The LinuxCNC forum shows 14,000 posts to 8,000 for the cnczone one. I (personally) find the cnczone forum rather hard to find, at the end of a very long list, and I don't think that the sub-forums are broken down small enough. Seems to me that the CNCzone moderator is a EMC doubter at best, maybe I'm wrong. I used to hang out more at CNCzone, but it really gets tiresome after a while. Lots of good information, and a lot of people that need help, but also lots of trolls and (often misinformed) know-it-alls that confuse things Eric Keller Boalsburg, Pennsylvania, USA -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Communication Channels (Was: An Open Letter...)
Eric Keller wrote: The LinuxCNC forum shows 14,000 posts to 8,000 for the cnczone one. I (personally) find the cnczone forum rather hard to find, at the end of a very long list, and I don't think that the sub-forums are broken down small enough. Seems to me that the CNCzone moderator is a EMC doubter at best, maybe I'm wrong. I used to hang out more at CNCzone, but it really gets tiresome after a while. Lots of good information, and a lot of people that need help, but also lots of trolls and (often misinformed) know-it-alls that confuse things I am a CNCZone doubter ;) It's not as bad as some of the other on-line list sites, but not being able to answer threads from my in box is the main reason it does not get as much support as these more accessible ones. It's a pet moan that there is not an ideal list management solution. SF and Yahoo both have there own niggles, but on the whole they do at least support both 'on-line' and 'off-line' users reasonably well? Any site that requires you to log in to reply when the message HAS been delivered off-line is a bigger pain ... -- Lester Caine - G8HFL - Contact - http://lsces.co.uk/wiki/?page=contact L.S.Caine Electronic Services - http://lsces.co.uk EnquirySolve - http://enquirysolve.com/ Model Engineers Digital Workshop - http://medw.co.uk// Firebird - http://www.firebirdsql.org/index.php -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Pico Sytems UPC and a Hardinge CHNC
Kirk Wallace wrote: but I used the paradigm of a switch closure at the time I did the installation, after giving it more thought and referring to: http://pico-systems.com/images/univstep.png it looks as if the inputs already go to an opto-isolator on the UPC anyway. It may be that a resistor (and a general purpose diode for reverse voltage protection) in series would work just fine. Limiting the current to the opto LED is the primary issue. The UPC and turret encoder 12V supply grounds would need to be tied together in order to close the circuit. The logic sense may need attention too. Yes, that is what I'd recommend. I think only the diode is needed, the resistor is already provided in the UPC board. Jon -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Communication Channels (Was: An Open Letter...)
andy pugh wrote: On 24 January 2012 13:47, Sven Wesley svenne.d...@gmail.com wrote: 3. There are too many info channels! Close down the forum on the LinuxCNC website ASAP! It doesn't work, Google can't make correct forward links and some browsers fail to show it. There is an active forum at cnczone I disagree. I don't like the linuxcnc forum particularly (I don't really like forums in general) but it is the first port of call for help for many new users. Yes, I second this. While the Joomla forum may not be the best system out there, it IS the main forum for questions and answers for LinuxCNC users, and has permanent storage of categorized info, where others can look up previous answers and follow the thread for weeks or months. You can't do that on IRC. It sure works on Linux/Firefox, what else should LinuxCNC users be using. (Yeah, I know, the dark side.) The CNC zone foum for EMC is NOT very active at all, I monitor it about once a week, sometimes there is a new message or even two. Jon -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Open letter to the EMC Board of Directors
John Thornton wrote: Why on earth would you want to close down the LinuxCNC forum and shift to a commercial laden for profit forum? There is nothing more annoying that waiting for all the commercials to load and clutter up your screen at the zone. Do you work for or derive profit the zone? Oh, that's a different story. The performance of CNCzone was never great, but tolerable. NOW, it is EXECRABLE! I have a 20 MB/s internet, and I often have to wait a MINUTE for the ads to load before I can see some discussion. Their server is massively overloaded, but they don't care as long as it brings in cash. Jon -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Pico Sytems UPC and a Hardinge CHNC
On Tue, 2012-01-24 at 12:26 -0600, Jon Elson wrote: Kirk Wallace wrote: but I used the paradigm of a switch closure at the time I did the installation, after giving it more thought and referring to: http://pico-systems.com/images/univstep.png it looks as if the inputs already go to an opto-isolator on the UPC anyway. It may be that a resistor (and a general purpose diode for reverse voltage protection) in series would work just fine. Limiting the current to the opto LED is the primary issue. The UPC and turret encoder 12V supply grounds would need to be tied together in order to close the circuit. The logic sense may need attention too. Yes, that is what I'd recommend. I think only the diode is needed, the resistor is already provided in the UPC board. Jon Just in case, my guess is that the internal resistor was sized for current limiting 5 Volts, so the current would go up by around 120% without an external resistor, which is okay? -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Open letter to the EMC Board of Directors
That is the main reason I don't go to the zone as with my 1Mb (sometimes that good sometimes not so good) it takes 30 minutes to load a page then you have to navigate all the ads to find the forum... John On 1/24/2012 12:36 PM, Jon Elson wrote: John Thornton wrote: Why on earth would you want to close down the LinuxCNC forum and shift to a commercial laden for profit forum? There is nothing more annoying that waiting for all the commercials to load and clutter up your screen at the zone. Do you work for or derive profit the zone? Oh, that's a different story. The performance of CNCzone was never great, but tolerable. NOW, it is EXECRABLE! I have a 20 MB/s internet, and I often have to wait a MINUTE for the ads to load before I can see some discussion. Their server is massively overloaded, but they don't care as long as it brings in cash. Jon -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Open letter to the EMC Board of Directors
On 01/24/2012 12:36 PM, Jon Elson wrote: Oh, that's a different story. The performance of CNCzone was never great, but tolerable. NOW, it is EXECRABLE! I have a 20 MB/s internet, and I often have to wait a MINUTE for the ads to load before I can see some discussion. Their It is easy to set up a server with forum software without adds - I could set one up, but I'm not so sure it is in our interest in the long run. I have the emails from this list that go back to 2008 and can search for key words in the posts etc.. No data base crash will make that information go away. The other issue is one I site from experience - web based forums tend to have more noise and OT posts on them. There is something about being email-list fluent that keeps the non serous from watering down the substance. Probably the best system is a mailing list that also has a webpage that displays threads and allows advanced searches. Karl Schmidt EMail k...@xtronics.com Transtronics, Inc. WEB http://xtronics.com 3209 West 9th Street Ph (785) 841-3089 Lawrence, KS 66049 FAX (785) 841-0434 Looking at money through the eyes of emotion will provide you with poverty. In a free society, considering money through objective logic will provide you with wealth. kps -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] [OT]Moveing pcb-gcode generated files to the milling machine=huge PIMA
On Tuesday, January 24, 2012 01:46:15 PM Rafael Skodlar did opine: [...] What I have in all my Linux workstations is this: - in konsole (my favorite GUI terminal) I open a number of tabs. First one is always reserved for root. I label it root and to use it I normally do sudo su - I probably have 5 or 7 tabs open, su- at any one time. Biggest problem then is that x belongs to gene, and root collects megabytes of x errors when root forgets to use vim and tries to use gedit. that gives me full root environment needed to manage packages, hard mount files, ISO images, etc. manually. That way I can easily remember what I'm doing in each tab. Yup. - in screen utility I also create first text screen for use as root. Others are named by function or remote host. If you are going to rename or change UID or GID it's best to do it in text terminal, i.e. not under KDE or Gnome for yourself as you'll pull the rug under your feet. You could create a new user with desired UID/GID in GUI but you'll need to make different login account name. The easiest IMO is to do the following: - Assuming you are at GUI login prompt, don't login, use Ctrl-Alt-F1 to go to text mode terminal, - login and become root with 'sudo su -' (ubuntu and some other distros) - edit /etc/passwd to change UID and GID user:x:1000:1000:user name,,,:/home/user:/bin/bash ^^ ^^ - run command pwconv - edit /etc/group user:x:1000: ^^ - run chown -R user.user /home/user to change ownership to all files in users home directory. - Reboot and you should be able to login as a user with new UID/GID. That makes a lot of sense, doing it that way, but since nfs is working now, I'll likely skip it. Once I get the forward path in nfs set, then I can redirect pcb-gcodes output files directly to the ~/gene/emc2/nc_files/project_subdir on the milling machine, and only be missing one thing. And that is either a stream file editor to manipulate the Xvalue in a .bot. file to be Xvalue + 2.195, thereby offsetting the file back to the board pocket in the board fixture. sed comes to mind, but apparently has no math functions, only text, so its DOA as a simple solution. pcb-gcode does the Mirror function by negating the Xvalues it writes to a .bot. file, but that makes the mirror on the minus side of X0.0 and I need to offset it back to the right so it hits the board turned over on the Y axis and remounted to the fixture. This could also be done if its possible, in the file setup header if a for the duration of the file gcode touch off could be done without moving the machine itself as long as there is a matching touch off cancel so we leave it in a known state for the next run. Actually, moving the machines X to the right by the length of the board in the gcode input, then doing the touch off would also get the job done. So the success of that depends on how hard it is to do an in-code touch off. Either way should allow near perfect registration of the top bottom of the board. Either method would allow correcting this pcb-gcode shortcoming. I got a msg back from the author but he is in school, up to his butt in study alligators and can't get back to it for a while. If you make a mistake in the passwd file and cannot login anymore, reboot and use live CD (ubuntu, knoppix, fedora, etc.), to bootup, mount root partition, edit/fix passwd file and reboot. No need to reinstall. Now make some coffee: http://blip.tv/linuxconfau/building-a-linux-powered-coffee-roaster-47470 63 Chuckle, I need that this morning (morning? Duh, it's past 2pm), the 2nd cup hasn't kicked in yet. :( I've now been searching the package repo looking for a sed-like util that can do the additions. 4 hours wasted and I am only down the the middle of the p's. Sigh. Cheers, Gene -- There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) My web page: http://coyoteden.dyndns-free.com:85/gene We have only two things to worry about: That things will never get back to normal, and that they already have. -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Open letter to the EMC Board of Directors
On Tue, 2012-01-24 at 12:42 -0600, John Thornton wrote: That is the main reason I don't go to the zone as with my 1Mb (sometimes that good sometimes not so good) it takes 30 minutes to load a page then you have to navigate all the ads to find the forum... John Thank goodness for the servers that host our website, wiki and such. It looks like PMDX gets credit for this. Thank you. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Open letter to the EMC Board of Directors
On Tue, Jan 24, 2012 at 11:31:11AM -0800, Kirk Wallace wrote: Thank goodness for the servers that host our website, wiki and such. It looks like PMDX gets credit for this. Thank you. Nope. SWP pays for our advertisement-free hosting of the website, web forum, and wiki. He and Alex and sometimes Jeff administer it. I pay for the hosting of our git repository and I administer it. I take responsibility for doing backups of the whole works. Seb pays for hosting of our buildbot, and he administers that stuff. This has been the state of affairs for many years now. Before that, in the EMC1 days, Sherline provided some hosting for us. Before that, I think Steve Stallings/PMDX did (that was before my time.) -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Open letter to the EMC Board of Directors
Thank goodness for the servers that host our website, wiki and such. It looks like PMDX gets credit for this. Thank you. -- Kirk Wallace Duh, well once upon a time, but not any longer. I think that credit now goes to Stephen Willie Padnos and DreamHost. Perhaps you could point out the reference to PMDX and someone in control of the current web site can give credit where credit is due. Cheers, Steve Stallings www.PMDX.com -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Open letter to the EMC Board of Directors
On Tue, 2012-01-24 at 11:41 -0800, steve...@newsguy.com wrote: Thank goodness for the servers that host our website, wiki and such. It looks like PMDX gets credit for this. Thank you. -- Kirk Wallace Duh, well once upon a time, but not any longer. I think that credit now goes to Stephen Willie Padnos and DreamHost. Perhaps you could point out the reference to PMDX and http://www.linuxcnc.org/index.php/english/about near the bottom of the page. someone in control of the current web site can give credit where credit is due. I would love to give the credit where it is due. I gave it my best shot. Cheers, Steve Stallings www.PMDX.com Thank you v1.0, Steve, thank you Stephen v2.0, ? v3? -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] question about tapered threading
Gentle persons: Several items were called out recently as being show stoppers for LinuxCNC. I do not aspire to learn the inner workings of LinuxCNC well enough to contribute to discussion of the first item, No jog on feedhold. However, the second item Taper thread pitches are measured along the hypotenuse ??? is an issue I think this bear of limited brain ought to be able to understand without being a LinuxCNC guru. At best I'm a dilettante with machine tools and certainly I'm no expert with a lathe. That not withstanding, long, long ago, I was taught to cut a tapered thread on a manual lathe by shifting the tailstock over. It seems to me this would necessarily mean the thread pitch was measured along the hypotenuse since the line of motion of the saddle is parallel to that hypotenuse. Not being able to imagine (I said limited brain, remember) how else they cut tapered threads on a lathe in the old days, I expect the standard specifications (ASME B1.20.1, fer instance) of the times would reflect this. Fast forward to today. I can't imagine that the standard specifications would have been rewritten just because CNC machining has been introduced. Unfortunately, ASME wants me to pay 21USD for the privilege of obtaining and reading B1.20.1 and I'd rather buy groceries for dinner than own an ASME specification. Could someone please enlighten me? Regards, Kent -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Thank Who? was: Open letter to the EMC Board of Directors
On Tue, 2012-01-24 at 13:48 -0600, Chris Radek wrote: On Tue, Jan 24, 2012 at 11:31:11AM -0800, Kirk Wallace wrote: Thank goodness for the servers that host our website, wiki and such. It looks like PMDX gets credit for this. Thank you. Nope. SWP pays for our advertisement-free hosting of the website, web forum, and wiki. He and Alex and sometimes Jeff administer it. I'd like to help. I've done website creation and maintenance in the past. I pay for the hosting of our git repository and I administer it. I take responsibility for doing backups of the whole works. Seb pays for hosting of our buildbot, and he administers that stuff. This has been the state of affairs for many years now. Before that, in the EMC1 days, Sherline provided some hosting for us. Before that, I think Steve Stallings/PMDX did (that was before my time.) I think I joined the list shortly after the EMC1/2 split (1996?) and I've only known of the Sherline, PMDX connection. Thanks for the update. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] question about tapered threading
On Tue, 2012-01-24 at 16:09 -0500, Kent A. Reed wrote: ... snip how else they cut tapered threads on a lathe in the old days, My guess is by using a taper attachment: http://its.fvtc.edu/machshop2/operations/taperw_attach.htm http://www.lathes.co.uk/hardinge/img19.gif http://www.lathes.co.uk/hardinge/page2.html I would think the feed, speed, chip load, CSS, and all that would depend on the hypotenuse, but this is worth price. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] question about tapered threading
On 24 January 2012 21:09, Kent A. Reed knbr...@erols.com wrote: At best I'm a dilettante with machine tools and certainly I'm no expert with a lathe. That not withstanding, long, long ago, I was taught to cut a tapered thread on a manual lathe by shifting the tailstock over. It seems to me this would necessarily mean the thread pitch was measured along the hypotenuse since the line of motion of the saddle is parallel to that hypotenuse. This would be the case if the tailstock is set over, however many lathes had taper-turning attachments which basically slaved the cross-feed to the longitudinal using a bar. In that case the taper would be along the adjacent line. I wonder if anyone ever noticed that these had different effects? Both NPT and BSPT have the same taper of 1/16 (3/4 on diameter per foot of length). This yields a correction factor of 1.000488, which could be applied as a constant in the G-code or, considering the munged-togetherness of taper threads, and the fact that it is half a thou in a 1 run, ignored. It would be more critical for higher angle taper threads. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] OT: Possible Retrofit candidate for someone in the heartland
On 1/24/2012 3:49 AM, Eric Keller wrote: On Mon, Jan 23, 2012 at 10:20 PM, Stuart Stevensonstus...@gmail.comwrote: The motor was probably removed by the same process that modified the control boxes. That's pretty sad to see. It really looks like the whole thing has been on its side, and it's hard to believe there isn't significant damage to the important stuff as a result. The lathes they sell at Penn State surplus usually have been on their top, but they usually manage to keep the mills upright. When I was in the Air Force, they used to keep the surplus machine tools outside, uncovered and rusting. That used to drive me nuts even though I had no place to put one at the time. Eric Keller Boalsburg, Pennsylvania Rusting outside... That is pretty common. The vehicles I have bought from GL have usually been sitting outside for at least a year before I pick them up. I bought an F150 Ford Pickup truck and it had a big mouse nest on top of the engine - seriously I took about a half a bushel of grass and other nesting material out of the engine compartment. The condition code of the truck was HX - and I should have taken heed as the engine needs a rebuild. That mill might be salvageable - I am sure that someone will take a chance on it. If the control boxes cushioned the fall perhaps nothing is seriously out of wack. I'd be concerned about the user load stipulation on that one. If that mill is on the 5th floor.. in the corner.. removing it might take some good skates, johnson bars, a few strong bodies, and some patience.. Usually on stuff like that they will load onto a flatbed. Dave -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Open letter to the EMC Board of Directors
I entirely agree. There is nothing wrong with the forum as it is. The CNCZone is not open and could go to a paid subscription service in a heartbeat. Dave On 1/24/2012 9:56 AM, John Thornton wrote: Why on earth would you want to close down the LinuxCNC forum and shift to a commercial laden for profit forum? There is nothing more annoying that waiting for all the commercials to load and clutter up your screen at the zone. Do you work for or derive profit the zone? John On 1/24/2012 7:47 AM, Sven Wesley wrote: 2012/1/24 gene heskettghesk...@wdtv.com On Monday, January 23, 2012 11:57:10 PM Jeff Epler did opine: Michael, I would like to address your concerns over the quality of the rebranding changes and the degree of consideration that they were given before they were made. I can speak only for myself here, and I have my linuxcnc developer hat on as I write this.. I don't have any trouble admitting that some of the changes I've pushed to v2.5_branch since the announcement may have been hasty and may require fine-tuning, if not outright reversion. Personally, I felt like a huge burden had been lifted from me by the announcement; now I could finally *do something* about this problem that has been hanging over our project for months. On the other hand, I still think the approach of starting by renaming stuff and then fixing what broke was the right one. If I had waited to push the changes until they were perfect, collaborating with my fellow developers would have been more difficult. Also in retrospect, a rebranding branch would have been a good idea (allowing collaboration while not leaving v2.5_branch unstable for days and days) but that, too, is water under the bridge. Starting a branch now will not benefit anyone, since v2.5_branch would be just as broken as it is now until the rebranding branch was merged. (and reverting the v2.5_branch to before the rebranding seems a very severe choice, because many people have already pulled these commits) The v2.5_branch is actually in pretty good shape now, AFAIK. Where it's not, let's talk about and address the specific technical issues. I hope that you will continue in supporting and contributing to our project. Jeff I both agree and disagree. I do think that LinuxCNC is a better name than EMC2, but I think a renaming process could have been handled differently. I also think that the communication and evolution of EMC2/LinuxCNC has decreased a lot. See this as a good time to restart this project! 1. Andy's idea of a white/black list is a VERY good start to proceed and to make this a fresh restart. Just do it. 2. Make a public Roadmap! Best case, make it voteable. I rather see 2 known-to-public well implemented features than 10 halfway coded surprises. 3. There are too many info channels! Close down the forum on the LinuxCNC website ASAP! It doesn't work, Google can't make correct forward links and some browsers fail to show it. There is an active forum at cnczone (I'll fix the renaming), there's a working mailing list (also active). There is a more or less dead website, the wiki is somewhat updated but still there are obsolete chapters or dead links (I promise to update the wiki myself more frequently in the future). At last, I will not put any energy into a debate about right or wrong name. I see this as an opportunity to make a restart and make this fantastic system better and future secured. Many people have spent so many hours in this project and we should take care of that! Regards, Sven -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3,
Re: [Emc-users] Open letter to the EMC Board of Directors
On 01/24/2012 12:36 PM, Jon Elson wrote: John Thornton wrote: Why on earth would you want to close down the LinuxCNC forum and shift to a commercial laden for profit forum? There is nothing more annoying that waiting for all the commercials to load and clutter up your screen at the zone. Do you work for or derive profit the zone? Oh, that's a different story. The performance of CNCzone was never great, but tolerable. NOW, it is EXECRABLE! I have a 20 MB/s internet, and I often have to wait a MINUTE for the ads to load before I can see some discussion. Their server is massively overloaded, but they don't care as long as it brings in cash. Jon Adblock Plus is your friend. I never leave home... uh, get on the net without it. I forget that ads even exist on most sites. http://adblockplus.org/ Moses -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] question about tapered threading (etc)
- Original Message - From: Kent A. Reed knbr...@erols.com Several items were called out recently as being show stoppers for LinuxCNC. I do not aspire to learn the inner workings of LinuxCNC well enough to contribute to discussion of the first item, No jog on feedhold. However, the second item Taper thread pitches are measured along the hypotenuse ??? is an issue I think this bear of limited brain ought to be able to understand without being a LinuxCNC guru. (a) The jog in feedhold really is a significant pain. You do need to move the tool away from the work when milling or turning stringy materials. Even something simple like deep-drilling with pecks can snarl up the tool with swarf. Of course the general solution could be very complex (e.g. if offsets were to be changed while feedheld) but some simple rules would cover a lot of cases without obvious risks to a thinking user. (b) For most practical tapered pipe threads no one will notice the pitch error. On one hand I think it is unusual CNC behaviour in threading (so possible difficulties for CAM users without a special postprocessor). But on the other hand the case of the angle not being small but being 90deg does appear to allow cutting of scrolls - has anyone ever tried this? John Prentice . -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] question about tapered threading (etc)
On 24 January 2012 21:52, John Prentice j...@castlewd.freeserve.co.uk wrote: (b) For most practical tapered pipe threads no one will notice the pitch error. On one hand I think it is unusual CNC behaviour in threading (so possible difficulties for CAM users without a special postprocessor). But on the other hand the case of the angle not being small but being 90deg does appear to allow cutting of scrolls - has anyone ever tried this? Not yet, but I am very much considering making a 3-jaw chuck milling vice thingy, so will need to then. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] [OT]pcb-gcode, bug?
On Tuesday, January 24, 2012 05:34:12 PM Fox Mulder did opine: Am 23.01.2012 01:23, schrieb gene heskett: Greetings all; I just ran it and had it generate a bunch of stuff I copied to the mill, and I recall seeing a checkmark in the setup menu that asked if I wanted the bottom flipped y instead of x. So I left it unchecked, expecting to see the bottom was then reversed left-right in the output, but it is not reversed. Bug, or something else I didn't do such as establishing a reference mark on the bottom layer with eagle? Which I would assume would be at the right front corner after the board was turned over? This is with 0,0,0 being established on the left front corner by continuity between the board sitting in HDPE and the machine frame. I tried it and it worked as expected. Without this option checked the board is reversed left-right and with it checked it is reversed up-down. You can see in the attached screenshots the output of pcb-gcode and it is the same as in linuxcnc. Ciao, Rainer Hi Rainer; I found someplace, I believe it was in eagle, where I had a check mark that wasn't supposed to be, so that is now working as expected. As far as the offsets being negative, an added G92 X2.195 (the length of the pcb in inches) at the top of the file before the first move corrects that, and a G92.1 at the bottom then restores it for the next run, so I am solving problems. The drill files I expect are going to want a different tool.tbl than the etch files, so I am running through things, carving air with the motors off, and trying to obtain a list of the tools it expects on a per file basis, nowhere near done with that. Then I need to get cracking on the gage, which I just realized is going to need a 2nd method because when the drill chuck is mounted, its about 4.5 longer than when a #2 morse collet is in the spindle, so that is likely going to need a re-think, probably by mounting the gage to the table and using an offset tool change position so its sitting over the gage when I change drill bits. The bot.drill needs 5 changes for instance. But we're making progress, slowly as I spent part of the day looking a newer pickups, my 99 GMC has the warped head filling the pan with antifreeze syndrome, we drained about 2 gallons of jelled 50/50 out of it yesterday. Between 7 grand worth of rust, and 5 grand for a reman engine, I am tempted to change the year on the title to something in the 2005+ range for another 5Gs. Plays hell with the bank balance spoils my plan to buy a Grizzly G4003G anytime soon. I think this is making haste, slowly. :) Keeps me out of the bars though. :-) Cheers, Gene -- There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) My web page: http://coyoteden.dyndns-free.com:85/gene A bug in the hand is better than one as yet undetected. -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] question about tapered threading (etc)
On 1/24/2012 4:52 PM, John Prentice wrote: - Original Message - From: Kent A. Reedknbr...@erols.com Several items were called out recently as being show stoppers for LinuxCNC. I do not aspire to learn the inner workings of LinuxCNC well enough to contribute to discussion of the first item, No jog on feedhold. However, the second item Taper thread pitches are measured along the hypotenuse ??? is an issue I think this bear of limited brain ought to be able to understand without being a LinuxCNC guru. (a) The jog in feedhold really is a significant pain. You do need to move the tool away from the work when milling or turning stringy materials. Even something simple like deep-drilling with pecks can snarl up the tool with swarf. Of course the general solution could be very complex (e.g. if offsets were to be changed while feedheld) but some simple rules would cover a lot of cases without obvious risks to a thinking user. Implementing this should actually be pretty easy if you implement a jog at the hal level. In the case of a servo machine, just add an offset to the target position of the PID control. Of course, you would probably want to have some sort of switch to enable it and cause the normal jog signals to be used here. You would also want to save the current position so you could go back to where you started. Most of this is probably doable without writing a line of C code. Of course, if you want to change tools and use a tool with different offsets, that would be a different problem. If I were implementing this, I would probably build a new component. The new component would memorize the jogging that was done so that hitting a single button could reverse the motion and have to tool return to the original location following the same path in reverse. I can understand that not everyone is a C programmer. Many EMC^H ^H ^H LinuxCNC users are integrators, though, and should be able to build something like this using hal. As far as the threading is concerned, some people just seem to want to complain. Alternatives include: 1 -- Do a little trig and convert the numbers. 2 -- Modify the source to (use the same trig) do it the way you like. Be generous and add a configuration flag that lets the code do things either way. 3 -- Find a friend to do #2. 4 -- Hire someone to do #2. (Don't even ask -- I have two prices for my work on LinuxCNC, the first is free and you probably can't afford the second.) Regards, Ken (b) For most practical tapered pipe threads no one will notice the pitch error. On one hand I think it is unusual CNC behaviour in threading (so possible difficulties for CAM users without a special postprocessor). But on the other hand the case of the angle not being small but being 90deg does appear to allow cutting of scrolls - has anyone ever tried this? John Prentice . -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] question about tapered threading
On Tue, 24 Jan 2012 16:09:34 -0500, you wrote: Not being able to imagine (I said limited brain, remember) how else they cut tapered threads on a lathe in the old days, I expect the standard specifications (ASME B1.20.1, fer instance) of the times would reflect this. Hi Kent Commercially taper threads were mostly bulk cut on repetition lathes using die heads or fitted with taper turning attachments. (At least where I worked) We made gas and water fittings of all types and sizes in iron, brass, bronze and gunmetal. Thread pitches on taper threads are measured exactly the same as parallel threads - ie along the Z axis (CNC parlance). NOT along the taper. My CAM programs know this, and cut the threads accordingly - unfortunately they turn out wrong. On small NPT or BSP threads the error induced by incorrect application of LinuxCNC's taper turning is small, but gets worse as the diameter and taper increases. Certainly wouldn't pass inspection without correction with my clients... Steve Blackmore -- -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Rotary homing.
On Tuesday, January 24, 2012 05:55:14 PM Ed Nisley did opine: On Tue, 2012-01-24 at 00:12 -0500, gene heskett wrote: Its doing all moves on the .bot. files in negative X from the reference point I'm pretty sure there's a checkbox along the way that reads Mirror X axis to make that answer come out right without any further attention. The Eagle gerbv274x CAM file has a mirror option that might do exactly what you need. Probably applies only to the bottom layer, though. [*fails to install pcb2gcode due to dependency hell*] The pcb2gcode man page seems to imply (in --mirror-absolute) that backside mirroring normally takes place at the middle of the board. Perhaps you have one or more of: - the Eagle origin at the wrong spot left front corner of the board, so all dimensions on the top side are positive. Seemed sensible at the time. :) - the backside Gerber file exported without mirroring - the --mirror-absolute option set/unset I'd expect some option twiddling would solve the problem without resort to G-Code hackage. After all, you're not the first person to mill the backside of a PCB with this tool chain! Obviously not, in this case I tried a G92 X2.195 before the first move, that put the holes where they belong, and of course a G92.1 to restore it at the bottom of the file before the M2. And you really need an automatic tool height probe switch... really you do! How do you train pcb-gcode to use it? I'll put a gage with a pcb contact on top of it on the table close to the board, and from the known height of the gage, I'll just pull the quill handle down till the light comes on. Should be close enough for my girls anyway. To do it in gcode, I'll need to pull the driver box down and wire up the stuff I did have to hook up for the G38.2, which should work for that, if I can insert those few lines of code after the M6 T# command. Good idea in fact. I didn't do that when I built the new driver box. Cheers, Gene -- There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) My web page: http://coyoteden.dyndns-free.com:85/gene I just forgot my whole philosophy of life!!! -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] question about tapered threading
On 24 January 2012 22:54, Steve Blackmore st...@pilotltd.net wrote: My CAM programs know this, and cut the threads accordingly - unfortunately they turn out wrong. With the ability to remap G-codes which is in Master it will be possible to re-map G33 to calculate the trigonometric correction (I think that this would be very easy, as long as G33 is one of the remappable codes) -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] question about tapered threading (etc)
On Tue, 24 Jan 2012 23:33:04 + andy pugh bodge...@gmail.com wrote: On 24 January 2012 22:52, Kenneth Lerman kenneth.ler...@se-ltd.com wrote: 4 -- Hire someone to do #2. (Don't even ask -- I have two prices for my work on LinuxCNC, the first is free and you probably can't afford the second.) This is the nub of the very crux of one of the problems. None of the people who are in a position to do paid work on LinuxCNC have the time to take on extra paid work. They are (to generalise) too busy doing stuff for fun for free. ...and I for one are very thankful. Dave -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Open letter to the EMC Board of Directors
On Tuesday, January 24, 2012 07:50:23 PM Dave did opine: On 1/24/2012 2:48 PM, Chris Radek wrote: On Tue, Jan 24, 2012 at 11:31:11AM -0800, Kirk Wallace wrote: Thank goodness for the servers that host our website, wiki and such. It looks like PMDX gets credit for this. Thank you. Nope. SWP pays for our advertisement-free hosting of the website, web forum, and wiki. He and Alex and sometimes Jeff administer it. I pay for the hosting of our git repository and I administer it. I take responsibility for doing backups of the whole works. Seb pays for hosting of our buildbot, and he administers that stuff. This has been the state of affairs for many years now. Before that, in the EMC1 days, Sherline provided some hosting for us. Before that, I think Steve Stallings/PMDX did (that was before my time.) Thank You Guys for doing that and footing the bill..I know hosting is not free.. if you put a donate link someplace... I think that might help offset some costs. Dave For the help I have received, durn tootin I'll donate. But I'd prefer you who are footing the bills agree on who gets what percentage all draw the the same donate page. In the meantime, thank you all for doing a bang up job of keeping it all alive, 24/7/365.25. -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users Cheers, Gene -- There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) My web page: http://coyoteden.dyndns-free.com:85/gene With clothes the new are best, with friends the old are best. -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Open letter to the EMC Board of Directors
On Tue, Jan 24, 2012 at 6:53 PM, gene heskett ghesk...@wdtv.com wrote: On Tuesday, January 24, 2012 07:50:23 PM Dave did opine: On 1/24/2012 2:48 PM, Chris Radek wrote: On Tue, Jan 24, 2012 at 11:31:11AM -0800, Kirk Wallace wrote: Thank goodness for the servers that host our website, wiki and such. It looks like PMDX gets credit for this. Thank you. Nope. SWP pays for our advertisement-free hosting of the website, web forum, and wiki. He and Alex and sometimes Jeff administer it. I pay for the hosting of our git repository and I administer it. I take responsibility for doing backups of the whole works. Seb pays for hosting of our buildbot, and he administers that stuff. This has been the state of affairs for many years now. Before that, in the EMC1 days, Sherline provided some hosting for us. Before that, I think Steve Stallings/PMDX did (that was before my time.) Thank You Guys for doing that and footing the bill..I know hosting is not free.. if you put a donate link someplace... I think that might help offset some costs. Dave For the help I have received, durn tootin I'll donate. But I'd prefer you who are footing the bills agree on who gets what percentage all draw the the same donate page. In the meantime, thank you all for doing a bang up job of keeping it all alive, 24/7/365.25. ditto ditto ditto -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users Cheers, Gene -- There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) My web page: http://coyoteden.dyndns-free.com:85/gene With clothes the new are best, with friends the old are best. -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- dos centavos -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Open letter to the EMC Board of Directors
On 25 January 2012 00:53, gene heskett ghesk...@wdtv.com wrote: For the help I have received, durn tootin I'll donate. But I'd prefer you who are footing the bills agree I was thinking about this while doing the dishes. Something I have never seen is a donate button that shows the current balance, and disables itself when the bills are up to date. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] question about tapered threading
Thanks, Andy, Kirk, John, and Steve, for the input on lathe taper attachments. It took me a minute to realize what I was looking at but then the light bulb turned on. Obviously, I never made it past the row of entry-level South Bend lathes in my own work, although I was acutely aware of the toolroom lathes in the back. I'm trying to decide if my mentor of long ago told me to make the trigonometric correction when using an offset tailstock and I subsequently forgot (always a possibility, Lyndon Johnson was president at the time, but I remember other technical details he taught me just fine). He might not have known himself (unlikely given his general level of skill), knew but didn't believe it mattered practically, knew but thought it was too complicated for a punter like me, you name it. Andy's last point about using the new remapping capability is intriguing. It helps me understand better why remapping G-codes might be a *good thing* (and a tip of the hat to Michael for working the issue). Regards, Kent -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] question about tapered threading
Kent A. Reed wrote: At best I'm a dilettante with machine tools and certainly I'm no expert with a lathe. That not withstanding, long, long ago, I was taught to cut a tapered thread on a manual lathe by shifting the tailstock over. It seems to me this would necessarily mean the thread pitch was measured along the hypotenuse since the line of motion of the saddle is parallel to that hypotenuse. Right. and in fact it is wrong, by the definition of the thread pitch. BUT, it is a small enough error in most tapered threads as to not cause any problem. Not being able to imagine (I said limited brain, remember) how else they cut tapered threads on a lathe in the old days, I expect the standard specifications (ASME B1.20.1, fer instance) of the times would reflect this. The proper way to do this is with a taper attachment, which WILL cut the exact taper parallel to the spindle axis. I think it is all in Machinery's handbook, of you have one of those. Jon -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] question about tapered threading (etc)
On Tue, Jan 24, 2012, at 10:02 PM, andy pugh wrote: On 24 January 2012 21:52, John Prentice j...@castlewd.freeserve.co.uk wrote: (b) For most practical tapered pipe threads no one will notice the pitch error. On one hand I think it is unusual CNC behaviour in threading (so possible difficulties for CAM users without a special postprocessor). But on the other hand the case of the angle not being small but being 90deg does appear to allow cutting of scrolls - has anyone ever tried this? Not yet, but I am very much considering making a 3-jaw chuck milling vice thingy, so will need to then. And that is the reason EMC measures pitch along the hypotenuse. A fairly famous quote from Allan Kay goes: Simple things should be simple, complex things should be possible. With the current configuration, simple things (straight threads) are simple. Complex things (tapered threads, including the extreme of a flat thread as in a three-jaw chuck) are possible. You have to do a little trig and make a minor correction if you want gage perfect pipe threads, but it is certainly possible. If EMC always calculated pitch along the Z axis, then the flat three-jaw-chuck style thread would be impossible. That is the reasoning behind our stubborn insistence that EMC work the way it does. We would rather have some complex things be a little more complex, if it lets us avoid making other complex things completely impossible. John Kasunich -- John Kasunich jmkasun...@fastmail.fm -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] question about tapered threading
On 1/24/2012 11:34 PM, Jon Elson wrote: Kent A. Reed wrote: At best I'm a dilettante with machine tools and certainly I'm no expert with a lathe. That not withstanding, long, long ago, I was taught to cut a tapered thread on a manual lathe by shifting the tailstock over. It seems to me this would necessarily mean the thread pitch was measured along the hypotenuse since the line of motion of the saddle is parallel to that hypotenuse. Right. and in fact it is wrong, by the definition of the thread pitch. BUT, it is a small enough error in most tapered threads as to not cause any problem. Not being able to imagine (I said limited brain, remember) how else they cut tapered threads on a lathe in the old days, I expect the standard specifications (ASME B1.20.1, fer instance) of the times would reflect this. The proper way to do this is with a taper attachment, which WILL cut the exact taper parallel to the spindle axis. I think it is all in Machinery's handbook, of you have one of those. Jon Well, yes I do, Jon, 26th ed. to be exact, but do I know how to use its index properly? Apparently not since I looked in all the wrong places before I posted my query. Now that I'm in the right section, American Pipe Threads, I see enough material reproduced from ASME B1.20.1 that I'm doubly glad I didn't pony up the 21USD to ASME's website so I could peek under their skirts. For all that, I don't see an explicit definition of the thread pitch in this section. There's use of threads per inch and of pitch or p but it isn't until the figure over Table 4 that I find an indication the thread pitch is measured along the axis and then only because of the orientation of the witness lines for the dimension labelled 2p. Quite a difference from all the explicit material in the screw thread sections. It's enough to make an old pedant like me pull some of what's left of the hair even though, practically, the error is quite small. Mechanics have persuaders, e.g., lengths of pipe to extend wrench handles, to take care of this (at which point my technician would exclaim good enough for government work). Once others had clued me in on the taper attachment it was easy to find illustrations on the Internet that make it obvious that using it one would cut the taper parallel to the spindle axis. Thanks, all. Regards, Kent -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] OT: Possible Retrofit candidate for someone in the heartland
On Tue, Jan 24, 2012 at 9:18 PM, Mark Cason farmerboy1...@yahoo.com wrote: On 01/23/2012 11:58 AM, Stuart Stevenson wrote: If no one on this list buys this machine I will bid on it. This machine is on the Air Force Base. If I can, I will pick it up for anyone that buys it. I have never been on the base before so I don't know their rules. I will try to find out. Stuart Buying from gov auctions is no big deal, just make sure you print out all of the paperwork, and take it with you. The paperwork will have a address, phone numbers, and date and time of pickup on it. It's been a while, but I believe that I had to call, and confirm that I would be there. Before I went, however, I was warned to follow all direction EXACTLY. Don't try to take any short cuts while driving across base, or you will run afoul of the MP's. I bought 2 Cummins 4B engines out of Ohio, I took everything I thought I would need to load them,and it turned out that they were in a warehouse that I wasn't allowed to enter. They took a fork lift and loaded them onto my trailer, and even helped me center them over the axles. All I had to do was strap them so they wouldn't move, and drive several hundred miles back home. Those engines were listed as used, but when I got them, they were fresh factory rebuilds, with 0 hours on them. I've also bought some tents from Georgia, that came in 2 large wooden crates 4'x4'x8'. They brought them out to me on a fork lift, and the driver picked them up level with my truck, and helped me slide each one into the back A day later, and I was at home trying to figure out how to get them OUT of the truck. Turns out that the limb of the old oak tree outside was enough to lift each one, and let me drive out from under them. Moving them into the shop, was considerably harder. Calling my niece, and her husband, and watching them try to load the crates into the back of a Toyota truck, PRICELESS! since I am about 5 miles from the base a second trip would not be a problem - if I forgot some paperwork -- -Mark Ne M'oubliez ---Family Motto Hope for the best, plan for the worst ---Personal Motto -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- dos centavos -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] [OT]Moveing pcb-gcode generated files to the milling machine=huge PIMA
On 01/24/2012 11:21 AM, gene heskett wrote: On Tuesday, January 24, 2012 01:46:15 PM Rafael Skodlar did opine: [...] Chuckle, I need that this morning (morning? Duh, it's past 2pm), the 2nd cup hasn't kicked in yet. :( I've now been searching the package repo looking for a sed-like util that can do the additions. 4 hours wasted and I am only down the the middle of the p's. Sigh. Cheers, Gene Why not try (g)awk? You can search, match strings, and do some math with it. Of course you could always use a combination of sed, awk and bash, or simply perl. -- Rafael -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] OT: Possible Retrofit candidate for someone in the heartland
On 1/25/2012 12:31 AM, Stuart Stevenson wrote: since I am about 5 miles from the base a second trip would not be a problem - if I forgot some paperwork That is extremely convenient. :-) The last two base visits I had the GL guy met me at the gate and I followed his car back to the pickup location. No problem. Dave -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] question about tapered threading (etc)
On 1/25/2012 1:11 AM, Kent A. Reed wrote: It may be annoying to know LinuxCNC works best with G-code programs tailored to it, but isn't this true also for other controllers? Yes. -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
