On Thursday 04 November 2021 19:33:39 John Dammeyer wrote: > Thanks Andy, > > > From: andy pugh [mailto:bodge...@gmail.com] > > > > On Thu, 4 Nov 2021 at 21:34, John Dammeyer <jo...@autoartisans.com> wrote: > > > The backlash removal will be a major project. > > > > Maybe https://www.denfordata.com/bb/viewtopic.php?t=3727 > > I have plastic on the Z of my CNC Router. It doesn't move too fast. > I think the 180 IPM I'm running with the mill plastic of any sort is a > non starter. > > > Or possibly: > > https://photos.app.goo.gl/72BgoRiKeGmQqDHs9 > > But I like this idea. > > > There is a GTEN RSH ballnut in there. They are rather slim but have > > an external ball return to deal with. That particular one was > > special-order with preload. > > The RSH is doesn't come in 25mm but the RSU 2505-4 looks like it would > be workable. The next time I take the table off I'll do more detailed > measurements. I have some latitude on placement height as both ends > of the table bearing mounts are custom castings. > > http://www.autoartisans.com/mill/XAxis-AlmostDone4.jpg > > The LHS has angular contact bearings and the holes although marked out > symmetrical turned out to not match up to poorly positioned holes in > the table. > > The other side where the power feed used to live turns out wasn't any > better and there the shaft just floats in a radial bearing. > http://www.autoartisans.com/mill/RHS_BearingHolder.jpg
Ouch, I can see backlash from here > Cheap mills come with a price... As I have learned the hard way with this g0704, the post isn't even vertical. So I am sorta in the market for one that is square. > > > -- > > atp > > "A motorcycle is a bicycle with a pandemonium attachment and is > > designed for the especial use of mechanical geniuses, daredevils and > > lunatics." > > � George Fitch, Atlanta Constitution Newspaper, 1912 > > > > > > _______________________________________________ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > 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, 1940) 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 Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
