Ender 3 Filament guide wheel with 608 bearing

thingiverse

I just changed the center hole from the original design to allow the use of a 608 bearing. It is a very tight fit for the bearing, I used a round file to clean up the inside of the hole and "tapped" in the bearing with a hammer. The inner hole for the bearing is on the larger side for the original arm. I added a little tape to the end for a snug fit and it seems to work a treat now.