Parametric dust cap for bearing

The supplied default parameters is for a 608 bearing (8x22x7), on my particular 3D printer, in PLA. Most likely, the maindia parameter will require some fine tuning to achieve the right press fit for your application.

The pictures shows a typical application for an axial fan motor. The first picture (not fully focussed, sorry about that) shows the bearing and axle end, the second shows the same view, but with the dust cap installed. The cap should be made with a diameter that gives a suitabl