MMU variable wall mounted spool holder system

I like the idea of wall mounted dryboxes to save space, but they cannot hold large 2+kg filament spools with 30cm diameter. I also don't like the fact they are fixed to the wall behind the printer which is not very comfortable. So I created more variable system, where you can combine both Prusa dryboxes and simple open spool holders of various sizes according to your needs by simple hanging them on the rods.

System is fully customizable, OpenSCAD sources are atached. I'm using prusa slicer (slic3r fork), for other slicers try to find similar setting as I mention in instructions for indivifual parts.

For printed threads I'm using great metric thread library by Dan Kirshner: https://dkprojects.net/openscad-threads/ (GPL licensed threads.scad).



# Rod holder
Depending on particular threaded rod type and wall type you will need to use 3 or more rod holders. For sturdy steel M8 threaded rod, 3 are enough.

## Extra parts:
* 2× 1 meter long M8 threaded rod,
* 12-20× M8 nut