About this 3D model

This is an scad model of the cheap stepper motors found on ebay. Part number 28BYJ-48 I intend to use it to help contruct a maze mouse based on these steppers. Maybe you will find it useful too. Updated scad to show the model with some colour to fit with the ultrasonic sensor model http://www.thingiverse.com/thing:122136 Updated scad as shaft has two flats rather than one.