Great design. Just what I needed. Thank you! I ended up using the 5.16 version and it was a little loose. The 5.0 was definitely too tight. I think 5.1 would have been perfect fro my printer. I ended up using 4 bearings and used a very very tiny bit of E6000 on the last bearing case to hold them in. I printed the top but this doesn’t really need it. Printed in PLA with 100% infill.