I've now had a chance to test the 3 I've made, and have come to the conclusion that compared to the rear thing, its not going to work all that well. Slathered in coconut oil, there is still a bit of stiction that effects the linearity of the move, and the improved flexgear, still in TPU, is worse at displaying this "stiction" than the TPU version of the original code.
Hubert sent me a spool of PETG, which combined with a printer that maybe needs help at the higher temps, but I was only able to make semi usable parts if the flow I used for PLA and TPU was slowed to around 50%. I might make one flexgear out of TEPG but doubt I can make one with usable splines, it just slobbers all over. One of the targets was motorizing the hand cranks on a BS-1 clone, and I bought some worm gear assemblies but they turned out to be too big to be mounted on the side of a BS-1 to drive its worm. Then today, wandeering around on ebay, I stumbled over a 100 watt motor/worm drive/encoder combo designed for estate gates and such, so I bought one of those to play "what if" with. I figure with 2 worms in series, its gonna run to where ever I tell it, even under cutting load. Thats what I'm hoping for. After all trouble I had making bearing carriers out of TEPG, and 3 restarts on the original .stl for the flexgear, I stopped the print, ran z up the pole, warmed the nozzle up to 255C, and pinched the end of the nozzle with about 4 layers of paper towel to clear the ball of twine it was dragging around, and adding the supports back into cura, it has suddenly started to behave itself, and is taking flow at 110% now, and laying up a pretty clean lay. But seeing as how thats a 12 hour build, we'll reserve judgement until its done. If it does the whole build like this is looking, I'm encouraged. 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
