On Thursday 21 May 2020 12:07:42 John Dammeyer wrote: > It's fairly robust. Like a Grizzly G3616. > http://www.autoartisans.com/mill/Mill_CNC > I almost bought one of those off the showroom floor at Lycoming Mall up in PA when grizzly had a facility there, but couldn't figure out how to get it home 350 miles to WV with my 99 GMC half ton surviving the trip, Too tall for a cargo van from uhaul, and IIRC its about 8k lbs. Trucking would have added to the price, a lot I thought. Sigh.
> But it's got a poor excuse for an ACME feed not on the X axis with > about 0.024" backlash. Yikes! > Climb milling in the X direction with slow RPM > and a large cutter causes the table to shake. So once the spindle > speed control system is in place the whole thing is coming apart for a > ball screw retrofit. And belt guards and covers etc. > > So with the current backlash it may not be robust enough for round > cutters. > > John > > > -----Original Message----- > > From: dave engvall [mailto:dengv...@charter.net] > > Sent: May-21-20 7:04 AM > > To: firstname.lastname@example.org > > Subject: Re: [Emc-users] Face Milling > > > > Round inserts are nice if you have the power and stiffness to use > > them. Only in desperation would I use a fly cutter simple because of > > the unbalanced load. > > Because of their radius the round inserts will give a nice finish. > > Have fun. > > > > Dave > > > > On 5/20/20 9:56 PM, John Dammeyer wrote: > > > I've been surfacing a casting that is larger than my machine > > > envelope. Not only that although pattern was 5/8" thick MDF the > > > > casting ended up with thicker and thinner parts. With it shimmed > > and moving clamps around I managed to flatten the bottom and then > > clamp it down and surface the top. But it took a long time. > > > > > I found LinuxCNC easy enough to use for this. Just kept resetting > > > x or y home and restarting the G_code. > > > > > > Anyone used one of these? > > > https://www.aliexpress.com/item/4000890081459.html > > > > > > Or with the round carbide inserts > > > https://www.aliexpress.com/item/32952847637.html > > > > > > Alternatively since I use the Tormach Tooling at a much higher > > > price there is this flycutter. > > > https://tormach.com/tts-superfly-cutter-kit-33031.html > > > > > > John > > > > > > > > > > > > > > > _______________________________________________ > > > Emc-users mailing list > > > Emcemail@example.com > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > _______________________________________________ > > Emc-users mailing list > > Emcfirstname.lastname@example.org > > https://lists.sourceforge.net/lists/listinfo/emc-users > > _______________________________________________ > Emc-users mailing list > Emcemail@example.com > 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 Emcfirstname.lastname@example.org https://lists.sourceforge.net/lists/listinfo/emc-users