On Sunday 28 March 2021 21:00:56 Chris Albertson wrote: > Back to printing ball bearings. The best way is not to do it. Buy > sealed bearing units and press them into a printed recess. But large > diameter sealed bearings can be expensive. The next best design is > to buy metal balls and print the races and assemble them. Printing > the rollers never works well. If you want everything to be made of > plastic buy the plastic balls used by "airsoft" guns. These make > pretty good bearings, much better than you can print and 2,000 balls, > 6mm in diameter cost only $10. > > If you like a challenge, try printing a sealed ball bearing unit on > one "go". It can be done as a stint but does not make a good bearing > for use in a machine. > > As for getting plastic to stick to glass try cleaning it very well > with "Bar Keepers Friend". The stuff is a powder like "Comet" but is > acidic and is much better for removing oils and such from > fingerprints. Hairspray usually works too. > I use that in the kitchen, beats comet like a white mouthed mule. But I must confess I hadn't thought of it for this, 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 [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
