MakerBot Caster

This is a parametric caster modeled in the form of a MakerBot. It is derived from the OpenSCad script Printable Key Rings by catarina http://www.thingiverse.com/thing:1378
The script allows easy adjustments of the caster's height, width, wheel width, wheel diameter, wheel position, bolt hole size, counter bore holes etc. Echo statements within the script provide approximate mount height and required bolt lengths for the wheel base. On the wheels, is an embossed profile of hoeken's Gator clip