FREE STL FILES FOR 3D PRINTING
These are 3D CAD models you can download and 3D print. Files are hosted on Thingiverse.
FREE SKETCHUP 3D MODELS
These are 3D models is the Sketchup format. Sketchup is a free 3D modeling program great for woodworking. You can download the program from the Sketchup website here - Sketchup