FreeCAD design of floating ball fixture for use with FicTrac and similar floating ball treadmill type setups. It is designed to be machined from aluminum and the step version can be sent somewhere like Plethora for manufacturing. Currently designs which accomodate 6mm, 8mm, 10mm, 11mm, and 12mm balls are included. The side mount hole should be tapped with 8-32 threads and the bottom air-fitting hole should be tapped with 1/4-28 threads.
