Parametric Bearing

A very bear bones bearing, that you can adjust the parameters however you want. This is very much inspired by https://www.thingiverse.com/thing:56298 , but I needed one of customizable size. The included stl will produce a bearing that:
- has a with of 8mm
- a center hole with diameter 8mm
- outer diameter of 35mm
- takes 12 6mm airsoft BBs

Simply adjust the BB's diameter, the number of them, and the inner and outer diameter. Ive also included a parameter to add some padding betw