STEP and Parasolid XT Models of the ReMix Board with and without Stepstick drivers are available here:
https://drive.google.com/drive/folders/0BzmIeL7UwT_jZ2hOY1RRbTRkR1U?usp=sharing
A huge thanks to Eric Lien for creating the CAD Models, Renders, and Mechanical drawings for the Cohesion3D Control Boards.