The attached picture shows a small knee Z axis switch plate mount to bolt onto my mill and cut with LinuxCNC. The slotted holes are to allow it to move the switch assembly closer or further away from the knee. The two small holes will be threaded to hold the switch plate which can move up and down it's slots to adjust the actual knee home position. Drawing is done. CAM is done. G-Code generated. Home is the bottom left corner. Ultimately I'll have a profiling operation that adds a radius to the corners. And I have to mill the rabbet on the bottom. Work holding is the issue. What's an ideal process? Clamp a slightly oversize piece in the vise and have the CNC drill the holes and mill the two slots? Then clamp it upside down onto a piece of MDF using the two slots as the place for the hold down bolts? Then run the profile and rabbet code? Or is it better to drill a couple of holes first in approximately the correct location of the slots and profile first. Then flip it and in the vise do the rest of the milling? No need to try and line it up twice. Or maybe drill two mounting holes, then bolt it to a rectangular piece and clamp that in the vise so it's above the jaws. Then profile and do the holes at the same time? Still needs to be flipped for the rabbet but then it could be referenced to the fixed jaw corner for Home Position. Suggestions? Thanks John
> -----Original Message----- > From: Gene Heskett [mailto:ghesk...@shentel.net] > Sent: July-11-19 7:02 PM > To: emc-users@lists.sourceforge.net > Subject: Re: [Emc-users] .ini file questions > > On Thursday 11 July 2019 13:12:17 John Dammeyer wrote: > > > > The value "HOME_OFFSET=" is the number value given to the point > > > where the home switch changes during the home_latch move. > > > The value "HOME=" is the position the joint will move to (relative > > > to the "HOME_OFFSET=" point) at the feed rate specified by > > > "HOME_FINAL_VEL=". > > > > > > So If you're using your negative limit switch as the home switch, > > > and specify HOME_OFFSET=-1 and HOME=0 after probing the switch the > > > axis will move to 1" (or 1mm) away from the switch with that point > > > given the value of 0 in the g53 machine coordinates. If you were to > > > set HOME_OFFSET=0 and HOME=1, the point the machine would stop > would > > > still be the same but that position would now be given the value of > > > 1 in the machine coordinates. > > > > > > Todd Zuercher > > > > Thanks. I tried all that and now it's perfect for me. It allows the > > fairly significant X axis backlash to be taken out without re-tripping > > the home/limit switch which was a bit of an issue. To get around it I > > reduced the backlash setting which caused its own set of problems. > > All good now. > > > > Now for the EDITOR setting. I can load a G-Code file, select the > > menu entry to edit a file. If it's the LCNC one loaded at start-up > > I'm told it's read only. If it's one of mine, nothing happens. No > > editor. Nothing. > > > > I've been using Mousepad outside of LCNC but setting Editor to > > Mousepad doesn�t work nor does setting it to the desktop link > > /usr/share/applications. Unlike Windows, unfortunately the link > > doesn't actually specify where the executable is. > > > > So what can I do. How do I specify the editor so that it runs with > > the currently loaded G-Code file? > > > > From the doc: > > EDITOR = gedit - The editor to use when selecting File > Edit to edit > > the G code from the AXIS menu. This must be configured for this menu > > item to work. Another valid entry is gnome-terminal -e vim. > > > First off, that gedit is an accidental code scrambler, evict it from the > facility. Give your machine a net cable, Then use synaptic to survey > what might be handy to go with geany. It has a plethora of pluggins. > > And then edit that .ini file to say geany. It has not made a mistake > that wasn't my own clumsy fat & ancient fingers in 4 or so years and its > never scrambled a big 800 loc .hal file yet. > > > > > > > > > > > > _______________________________________________ > > Emc-users mailing list > > <mailto:Emc-users@lists.sourceforge.net> Emc-users@lists.sourceforge.net > > <https://lists.sourceforge.net/lists/listinfo/emc-users> > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > Cheers, Gene Heskett > -- > "There are four boxes to be used in defense of liberty: > soap, ballot, jury, and ammo. Please use in that order." > -Ed Howdershelt (Author) > If we desire respect for the law, we must first make the law respectable. > - Louis D. Brandeis > Genes Web page < <http://geneslinuxbox.net:6309/gene> > http://geneslinuxbox.net:6309/gene> > > > _______________________________________________ > Emc-users mailing list > <mailto:Emc-users@lists.sourceforge.net> Emc-users@lists.sourceforge.net > <https://lists.sourceforge.net/lists/listinfo/emc-users> > https://lists.sourceforge.net/lists/listinfo/emc-users
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