1st version 6200 Customized Gear Bearing - failed, see description

thingiverse

Result: failure on my printer, the device never managed to move smoothly. But a very similar one successfully moved, as explained below. (prusa i3 clone with 0.3mm nozzle, printed in 0.1mm layers at 100% infill) I tried many bearings from thingiverse (ball bearings, linear bearing, with and without cages) before finding this design that truly works well as a print-in-place with a 3d printer. Other designs that are not print-in-place and use non-3d-printed balls like airsoft balls also work very well. **Printing this model led me to four key discoveries:** 1. As you size down the model, you need to increase the Tol parameter (tolerance) to avoid stuck parts. 2. The more planets used in the design, the harder it is to make the printed model move smoothly. 3. Without a raft and with a heated bed, the bottom of the model tends to glue to itself easily; sanding that face makes it easier to un-glue. 4. I had more success with this customized version (see following link), using fewer planets: https://www.thingiverse.com/thing:4352687