Generates a small subset of timing belt profiles so you can cut them out of your models. This is heavily Derived from http://www.thingiverse.com/thing:16627 by Droftarts in so much that I stole the profiles from that file.
Currently generates T2.5, T5, T10 and MXL
Include in your SCAD file using the use command.
belt_length(profile = "T5", belt_width = 10, n = 15);
profile is a string as specified in the file
belt_width is the width of the timing belt
n is the number of teeth