Clip-on Top Spool Mount for 2020 Extrusion (Ender 3, Longer LK1, Alfawise U20, etc)

Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4734607.

I liked the shorter mount and spool/holder that Br0tein made, but I wanted to be able to clip it on without having to partially disassemble my printer. This gets the job done.

I also printed these bearings and they work great with this spool holder: https://www.thingiverse.com/thing:2746804