On Tuesday 04 August 2020 21:46:51 Gene Heskett wrote: > On Tuesday 04 August 2020 21:26:28 Chris Albertson wrote: > > So the parts come out about 0.4mm to large no matter what size they > > are. It is because of surface imperfection of is the side very > > smooth and flat? > > Doesn't look that bad. > > > I would measure after doing a bit of sandpapering to true up the > > sides. With a milling machine the tool marks are scratches below the > > surface but with printers the marks are above the surface. You > > have to expect to do some post processing. But sanding uff a full > > 0.4mm seems to much. Sanding off the top 0.4mm of the bumps is > > normal.
I probably did not take that much, once centered, and the first scratch made, it was only 6 thou or so to a good fit, not enough to cut all the polish away. So thats done, but body spinning in lathe chuck sure makes the tramming error obvious. Now I need bolts and the motors that were supposed to be here Monday. After rescaling the printer so its mainly a bias error, which will make the internal gear a hair smaller, I think I'll make 3 of those as that will improve the engagement depth of this drive. Might have to ream some boltholes as these bodies are scaled up about half a percent. That will about write a ~30~ to the second spool of PLA. But I've got a buggy freecad appimage, and a bad file for the 5x5 cube calibrator, there is a code error that creates a bump about 1mm up from the base of the top cube. If someone has a copy of that w/o that bump, I'd appreciate a pm with it attached. > It is, so I'll bore with a very sharp tool. When I get to it, I worked > with my scanner and legal stuff that had to be emailed a good bit of > the day. And I'm about spent. Some small adjustments made and another > 5x5 is in progress now. And I can see that I can lower the temps a few > degrees and still get adequate adhesion to the glass. Still fine > tuning IOW. > > Thanks Chris. [...] 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 Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
