7 Cylinder Radial Engine Model - upgraded driveshaft

thingiverse

I think the original model was fantastic, but that tiny pin connecting to the handle was incredibly fragile and just didn't function properly. So, I transformed the pin into a bolt, added threading to a reinforced handle. I upgraded the rotor to accommodate the larger pin and also strengthened it slightly since the hole was now bigger. It works flawlessly. I print the pin and handle at .1mm with a speed of 40mm/sec to guarantee excellent threads; your results may vary, however. The handle requires supports. The rest I print at .2mm.