This is a proof of concept of a strong rotation module, which can be used in various robotic systems.An example is given as png image. This is a new yaw rotation for the IMU tracker a friend is building:https://www.logre.eu/wiki/Stabilisateur_Tracker_GPS_%C3%A0_IMUThe idea is to use a Thrust Ball Bearing as rotation base. Parts are guided and maintained with a Shoulder Screw.Where to buy:About scad files: you need the bearing.scad file from mcad library. I uploaded it here, because I added a new bearing (126) model. You need to add this line in the bearingDimensions() function:model == 126 ? [6mm, 12mm, 4*mm]: