Bearing using Airsoft Pellets (Parametric)

Simple bearing using 6mm airsoft pellets as balls/rollers. Designed in Autodesk Fusion 360.

The .stl file is set up for a 31mm shaft and a 54mm outside diameter, which works well on my MakerSelect (v1) printer and a roll of Hatchbox PLA. This is **not scalable** - use the (f3d) parametric file for a bearing with different inner or outer diameter (or different ball size).

The clearance on this is fairly tight. The first few pellets insert easily, but eventually you reach a point where you have to really force them in. I used the flat side of a paint scraper to provide a little extra surface area to push on and was able to get all of the balls inserted.

The .f3d file is included - use Fusion 360 to modify the parameters to suit your own needs.

Future improvements:
* Add width parameter to control overall width of bearing.
* Chamfer or fillet inner and outer races.
* Add retainer to help will larger diameter balls.
* Customize to better suit 3d printing hatchbox spools.