sharpening the roller bearings

A project log for PullStruder: from plastic bottle to PET filament

Ever wanted to use plastic bottle for 3d printing ? Here is how to !

jp-gleyzesJP Gleyzes 09/19/2022 at 10:110 Comments

Sharpening the bearings is needed to get a nice 90° sharp edge on each roller bearing.

Mount the two bearings on a 8 mm rod, then grind the circumference on a belt sander.

Unlike what I am doing, YOU SHOULD WEAR GLOVES...

Then flatten the edge of each bearing.

That's it, your bearings are ready to be mounted on the ribbon cutter.