Guest Curator Emmett Lalish has this to say about this 3DxMechanicals project: “I think we’ve already figured out I’m not the only one on Thingiverse with a soft spot for gears. Still, I love how helical gears and worm gears are the same thing, just oriented differently. I want to do a project to showcase that, but I’d say this thing does a pretty decent job.”
Pitch circle 45 mm (3 teeth), 60 mm (4 teeth), 75 mm (5 teeth).
The diameter of the rolling circle for the epicycloidal curves is all the same 30 mm.
The diameter of the center hole is 6.4 mm (that is suited for the use of M3 bolts for the shafts when the gears are printed in 1/2 scale.) (Jan 13, 2014) Adding STL data of the 4 teeth helical gear….