With a properly sharpened tool - and a bit more hp - you could plunge a cutter to make the shape.. (like a circular shaper..)
I did it on the emco but the quality wasn't as nice.. (partly the rigidity and partly the cutter grind) so - that is way faster... http://electronicsam.com/images/greenmachine/IMG_20200915_174431.jpg http://electronicsam.com/images/greenmachine/IMG_20200915_182303.jpg sam On Thu, Sep 17, 2020 at 11:19 AM John Dammeyer <[email protected]> wrote: > As always both videos are very impressive. Although I think Andy Pugh > would just move his lathe chuck onto his Harmonic Drive 4th axis and make > the square in far less than 7 minutes. > > Maybe a competition? On your marks. Get set. Go! > > Very cool Sam! One day maybe I'll be able to do it too. > Thanks for posting those. > John Dammeyer > > > > -----Original Message----- > > From: Sam Sokolik [mailto:[email protected]] > > Sent: September-17-20 6:56 AM > > To: Enhanced Machine Controller (EMC) > > Subject: Re: [Emc-users] Non-circular boring. Linuxcnc style. > > > > Thought I would test a square - adding a radius to the corner certainly > > helped the path following. (I think this was .030") > > > > https://youtu.be/Q9zhi8Mc1fE > > > > > > On Mon, May 4, 2020 at 3:03 AM Gene Heskett <[email protected]> > wrote: > > > > > On Sunday 03 May 2020 14:34:24 Sam Sokolik wrote: > > > > > > > https://youtu.be/PtD9w6lp8n8 > > > > > > Sam, dammit, you are having too much fun while the rest of us are more > or > > > less locked up. > > > > > > But it shows others what LinuxCNC CAN do, so I love it. That said, in > low > > > gear, my spincle encoder scale is a bit over 14,000, so I ought to be > > > able to do some of that too. If I can con it into going that slow. > Since > > > I have 2x the nameplate FLA to hit that motor with, I don't see why > not. > > > 1st step is 100 rpm in high gear, and its still turning ar 15% on the > > > slider, I'll bet it can do it in low gear. Gotta get me a boring head > > > athough I see you aren't always useing one. Gotta put a range switch on > > > the tach, its sorta difficult to see 10 rpm on a 3000 scale. I wonder > > > just how far I can push PGain at that sort of speed, its plumb stable > > > and silent at 20 right now and just a bit shaky at 40. I have said for > a > > > long time that there isn't anything that LinuxCNC cannot do and things > > > like this continue to prove it. > > > > > > I hope all those guys using Mach on youtube are dying of jealousy. My > > > grin us hurting my ears. :) > > > > > > > > On Wed, Apr 29, 2020, 6:43 AM Stuart Stevenson <[email protected]> > > > wrote: > > > > > Sam, > > > > > I heard you say your circle is a polygon of a thousand sides. > > > > > > > > > > In APT4 a circle of 2500 inches radius is calculated as a straight > > > > > line. That allows an algorithm for part profiles to be described as > > > > > all radiuses and the variable values determine the lines and > > > > > circles. > > > > > Just another possibly interesting random detail out of the wet > > > > > ram(thanks Gene) brought out by a random comment. > > > > > > > > > > Love your videos. > > > > > > > > > > Stuart > > > > > > All it takes is for somebody to ask 'what if?'. I do it occasionally, > so > > > have you, but Sam seems like he does it a lot. And all of us benefit > > > from this lists ability to answer the questions generated by our > wildest > > > dreams. > > > > > > Thank you all. > > > > > > > > On Tue, Apr 28, 2020 at 9:57 PM Sam Sokolik <[email protected]> > > > wrote: > > > > > > just to see if it would... > > > > > > > > > > > > https://youtu.be/a7CO9gohaXE > > > > > > > > > > > > On Sun, Apr 26, 2020 at 2:54 PM Sam Sokolik <[email protected]> > > > wrote: > > > > > > > the new encoder seems to work good :) > > > > > > > > > > > > > > > > > > > > > > > > > > > > On Tue, Apr 21, 2020 at 9:53 PM Jon Elson > > > > > > > <[email protected]> > > > > > > > > > > > > wrote: > > > > > > >> On 04/21/2020 09:11 PM, Sam Sokolik wrote: > > > > > > >> > Just the way the path was generated... Didn't try that > hard. > > > > > > >> > Acad > > > > > > > > > > -> > > > > > > > > > > > >> ace > > > > > > >> > > > > > > >> > converter for simple stuff like this. (Or by hand) > > > > > > >> > > > > > > >> I have a bunch of little C programs that write most of my > > > > > > >> G-code. Making round bores and rectangular pockets, and > > > > > > >> trepanning both of those shapes in sheet materials. All of > > > > > > >> them do it by climb mill. > > > > > > >> Even when I did some things in bobcad, I set it up for climb > > > > > > >> mill. > > > > > > >> > > > > > > >> Try it sometime, you'll be surprised how much better it > > > > > > >> works - ESPECIALLY in aluminum. Just program it to go > > > > > > >> counterclockwise around any internal pocket. > > > > > > >> > > > > > > >> Jon > > > > > > >> > > > > > > >> > > > > > > >> _______________________________________________ > > > > > > >> Emc-users mailing list > > > > > > >> [email protected] > > > > > > >> https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > > > > > > > _______________________________________________ > > > > > > Emc-users mailing list > > > > > > [email protected] > > > > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > > > > > -- > > > > > Addressee is the intended audience. > > > > > If you are not the addressee then my consent is not given for you > to > > > > > read this email furthermore it is my wish you would close this > > > > > without saving or reading, and cease and desist from saving or > > > > > opening my private correspondence. > > > > > Thank you for honoring my wish. > > > > > > > > > > _______________________________________________ > > > > > Emc-users mailing list > > > > > [email protected] > > > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > > > _______________________________________________ > > > > Emc-users mailing list > > > > [email protected] > > > > 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> > > > > > > > > > _______________________________________________ > > > Emc-users mailing list > > > [email protected] > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > > _______________________________________________ > > Emc-users mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
