Sparkmaker Leadscrew Nut - 2mm pitch

thingiverse

I've tried the original nut by Sacy, but it remained too tight to be used by the sparkmaker servo. Attempts at scaling it up lead to a better fit, but never lose enough, up to the point where the side screws were no longer matching the hole positions on the carriage. So I reviewed the model, and changed the thread pitch from 1.5mm to 1.98, which is closer to the 2mm pitch of the leadscrew on the printer (I used a slightly smaller pitch to create pressure/tightness). My testing shows that it now fits without the need of stripping plastic with the leadscrew connected to a drill, like the original one. Depending on your printers, you might need to scale it up or down, but probably not by more than a couple of percent. I've printed it using 100% infill and a 0.12 layer height. It takes about 1g of PLA.