Thinkfun Tread Expansion

PRINT IN PLACE TREAD EXPANSION
I have designed a print in place tread set for the Thinkfun Maker Studio sets. The treads are designed to be spaced using the long connectors as a guide. Take the long connector and mark the outside holes as well as the center hole on your box and punch them out. Then print a tread for each side and three spools for each tread. You can design all kinds of vehicles that use treads. I have included a plow for a bulldozer (from a pop-tarts box) and skis to make