About this 3D model

The printrbot chassis stretched and channeled to to fit an obscure stepper motor that they don't make anymore (nema 25?). Also: Wade extruder optimized for 6-32 hardware, and Sublime's herringbone gears (small gear fixed (no more hole in the gear mesh, thicker at the set screw), be careful on the shells on the large gear(hollow teeth= bad))