Dust screen XL for filament spool

A dust screen assembly for the filament spool of my Opiliones 2L.

For now, the 2 off M6 bolts are 3D printed ones - I'll probably get some Nylon ones (PA66), when I have a chance, but for now these will do just fine.

I've included STEP format source files, so you can modify where required.

Edit December 28th: Added a set of spool bearings to this kit, in order to see if this reduces the tension on the filament. The current tension doesn't seem to cause issues, but I'm just tinkering her