2x4 Wheels

These wheels are designed to be used with 2x4 skids.  A 2x4, standing on edge is 3.5" wide.  These wheels are 2mm shorter than that.  This allows the object to rest on the skids.  When lifted from the end opposite the wheels, the object can be rolled easily.

Axles are ¼" x 4" bolts.  There is space for a washer between the wheel and the frame but this isn't required.

I don't know how much these wheels can hold but they wheel a 160 pound concrete pump with no trouble.  The wheels in the pic are PLA, 12% infill, 2 perimeters.

Easy print.  No support.  Use whatever filament you prefer.