On Wednesday 07 July 2021 20:45:21 John Dammeyer wrote: > Thanks > So how did you work out how far it overshoots? > John > > > From: jrmitchellj [mailto:[email protected]] > > > > Spiral flute taps for blind holes. > > Spiral point taps for through holes. > > For aluminum, I use uncoated, or bright HSS taps. > > > > I have been doing alot of m2 & 4-40 holes with rigid mounted taps, > > none broken! All blind holes. > > The difficult part is figuring out how far the spindle overshoots > > (rotation) for reversal. On my milling machine, I have it down to > > half of a rotation overshoot, using the braling on my Yaskawa VFD. > > That, John, is all in the rpi/sheldon config tarball I sent you by pm a few days back, displayed in the axis gui, and also displays distance traveled in addition to the turns IF the gcode takes advantage of it. Otherwise the 2nd display will show a 0.000. Overshoot at 100 rpm in high gear, not backgear, and first gear in the E400 belt position is typically .25 turns with a 30+lb chuck mounted, but gets downright horrible at 500 revs. Don't try that UNLESS you have equipt the backing plate hubs with clamps to prevent unscrewing the chuck. > > > > --J. Ray Mitchell Jr. > > [email protected] > > _______________________________________________ > 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
