NEMA 23
thingiverse
A precisely drawn model of a Nema 23 stepper motor, found in a skip, serves as my z-axis motor for an upcoming CNC mill/3D printer project in Autodesk Inventor 2011 professional. If you possess a similar motor and wish to modify it, standard dimensions should make adaptations straightforward, regardless of the body shape. The motor lacks a rotating shaft, but this is easily adjustable.
Download Model from thingiverse
With this file you will be able to print NEMA 23 with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on NEMA 23.