On Thursday 26 August 2021 17:57:09 Ralph Stirling wrote: > This might inspire some of you. > > https://www.wittenstein-us.com/zero-backlash-galaxie-gearbox/ > > -- Ralph
That looks like an excedrin headache to try and print. IMO, this is designed to get around any patents that might still exist, and would need far more precise a make and high priced steels. But I still think the loose belt is a better idea. But get rid of the separate and expensive ball bearings and make the armature itself eccentric, wrapping it in a dual row, printed in plastic bearing using crosman bb's for balls is working moderately well for me. And it will be strongest when the splines are worn to fit each other. What I am fine tuning right now, and may have to resort to a smaller nozzle to print it, is a new preloaded fit that when broke in, still has zero backlash. But one of them has now been running on my kitchen counter for a month at about 20 rpm output, 600 at the motor, with no noise and no breakage, with a 1NM motor turning it. But it can't be done in PLA, must have the more flexible PETG. And that eliminates any printer not using at least an E3D V6 or better hot end, I now have 5 printers tossed in the corner, which claimed to be able to use PETG. Once maybe, but not a full spool of it. > > _______________________________________________ > 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) 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
