4:1 Print in Place Gearbox

A simple 4:1 ratio Gearbox which prints without support material. It can be printed mono or dual extrusion. The axles have a .75mm separation from the frame so that they are free to rotate, while all the parts print as a single unit. It may be necessary to gently work the axles loose after the print is finished. Since the axles are thin I recommend printing with relatively dense infill. The frame and the axles both have 4mm mounting holes at various locations, as well as 5mm cubic insets to join