On Tuesday 05 January 2021 12:25:42 andy pugh wrote: > I bought an FHA-17C actuator from eBay. It was cheaper than normal, > for parts or not working. > It clearly had the cables cut off, so I decided to gamble. > > It turns out that things were worse than I hoped. > > https://photos.app.goo.gl/p3SL2Bwv2b9yd5XJ9 > > I am seriously considering trying to make a new flexspline. I mean, > how hard can it be?
Don't waste your time trying to 3d print it, Andy. I've tried every filament recipe that is made without lasting at 10 rpm output running overnight, they've all, even TPU looked like that in the mornings with a nema 17 driver. That one I'd hazard a guess, has been over torqued, normal breakage for any of my attempts is at the wall/disk junction. The flexing is highly concentrated at the bottom of the side wall. In 15 or more tries, even with an oversized bearing carrier, I've not broken the wall like that one is. As the splines are a sliding contact, correct lube is very important. Thanks Andy. 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
