On Friday 19 March 2021 11:03:05 Sam Sokolik wrote: > So - this didn't make it 6 hours with the steppers running 833rpm > (3000deg/min at the face plate) (forward reverse some positioning...) > > http://electronicsam.com/images/greenmachine/IMG_20210317_073558.jpg > > Now - I am sure it would last longer if it was run slower... The flex > gear now has the consistency of chocolate.. It just crumbles. > > So - I printed the flex gear out of petg. As of this morning it has > run for 12 hours and still positions correctly. I would say - if it > last a good 24 hours - it will be perfect for a hobby 4th axis. It > isn't going to be run like this in normal situations and you can > always print more gears... > > sam
I'm way behind you, but I am working in PETG too. I thought about the thickness of the liner that makes the loose belt smooth on the inside, and I've made several, still looking for the size match that makes it all work RIGHT. But my thinking is that it should be thinner just to give it a greater flexability life. And I'm using smaller bearings, mainly because I had a roll of them from a previously aborted attempt to use a conventional flex gear. And I've been reworking my openscad files to make it closer and closer to pure parametric. I'll have to admit that this is putting a strain on my already damaged wet ram by the pulmonary embolism 7 years ago. That and openscad is a segfaulter about 2x a day are making it a bit of a headache. But I am learning, at least about openscad. Thanks for posting the video, Sam. Stay safe and well. 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
