Parametric oversized snaptogether 3d-printable wheels. Designed for the truckbot (http://www.thingiverse.com/thing:10349). Not compatible with the light sensor or temp/humidity sensors (http://www.thingiverse.com/thing:11055).VIDEO: http://www.youtube.com/watch?v=9cWYPE-cpFgPrint them out, snap them together and attach to truckbot in lieu of the original wheels. The tension caused by the shape/angle of the parts should hold them tightly together, so no glue should be necessary. The design is based on the tolerances of my cupcake 3D printer, so your mileage may vary.UPDATE: I chopped the center piece in half for folks who could not bend the spokes enough to get them to snap together. If printing in ABS, you should not need this. Otherwise, use the centertop and centerbottom STL files instead of the original centerpiece.