Bearings in one print

thingiverse

Here are bearings that I started designing a while back. They print easily and don't need any supports. There are two versions, each with its own needs: V1: Single Roll - Low friction and high speed is the focus. V2: Double Rollers - Better guiding and resistance but more friction is what you get. Material-wise, PLA or ABS works fine. Infill of 20% should be enough. I'm planning on making videos to show these bearings in action. Your feedback is welcome!