All my testing to date on the improved actuators for SMMB have used 3d printed parts from Shapeways.  Both to have a faster iteration time, and to reduce costs, I’ve optimized all the parts to be printed on my Prusa MK3s.

Here’s all of the individual parts:

Them assembled into a leg with the other necessary hardware:

And some jumping on that leg (caveat, this video is from the previous endurance testing post):

A full set of leg parts can be printed in PETG in about 12 hours and uses a little less than 90 grams of plastic.