Filament Roller Clip and Anchor for Prusa XL Filament Roller

The excellent Prusa XL Filament Roller by bomtarnes works as advertised. However the 1 kg spool would slide toward the outside edge of the roller over time. I wanted to make a simple clip that would hold it in place.

I used adhesive neoprene rubber strips to give the clip better grip on the roller stem.