Parametric Thrust Bearing

Design based on Positive Altitude's YouTube video: "How to Make 3D Printed Bearings"
Designed in FreeCAD. I used the 6mm Airsoft BB's but that can be changed in the params spreadsheet.

The smallest size that will work is limited by the M3 bolts between the top and the bottom. To go smaller the models needs to be changed to use M1 or M2.