This is a remix of http://www.thingiverse.com/thing:172484
Modified to mount to 2020 using a single 5mm t-slot nut. I also added a space for the head of an 8mm bolt to recess into the mounting plate of the holder so the bearings can sit nearly flush with the mounting plate.
To prevent this from breaking the mounting plate in half like my first one did, I added two holes where wood screws can be screwed in from the bottom to give it strength. The first one I printed broke, because it was one of my very first printed parts and I didn't have the infill-percent high enough. I didn't put screws in the vertical holes yet because I haven't had strength issues.
I added a filament guide arm. It's printed as a separate piece for easier printing.
If you need to have the filament guide arm on the opposite side, the mounting hole for the guide arm can be moved from the back to the front via the OpenSCAD file. The filament arm was made in Sketchup, mirror it vertically if it's to be used in front of the spool holder.
It might help to use glue or acetone slurry to glue to washer nearest the mounting plate into place to prevent the bearing washer unit from sliding out.
| 608_filament_holder-bearing-spacers.stl | 620.7KB | |
| 608_filament_holder-updated.stl | 599.1KB | |
| 608_filament_holder.scad | 11.9KB | |
| filament_guide_arm.stl | 622.0KB |
