RepStrap: bigger tooth pulleys...

The instructions for building a Darwin say to have the pulley molds made by a rapid prototype shop. If you can't tell by now I am too cheap for that. My solution, and I think that it is unique, is to cut PVC end caps to the width of the tooth ribbon and sandwich it between two pieces of MDF.



One thing I have noticed, however, is that the hole is not in the center of the pulley with the way that I do this. I hope this doesn't cause problems as the holes are only off by two millimeters, tops.



I will be fitting these to the machine later today. I hope to be building the stepper motor controller boards later this week.