I'm trying something new for my dry box revision 2. My initial version had a suspended shaft upon which the rolls of filament were mounted. It works great, but is a complete pain whenever you want to swap a roll out. The whole set of rolls and the shaft have to be removed from the dry box just to change one spool. Not an easy procedure at all.

So now I'm printing a slightly modified version of this: https://www.thingiverse.com/thing:2457788 The magnets came from here: https://www.banggood.com/8pcs-N52-20...-p-977519.html I put a steel sheet I reclaimed from some old air duct materials onto the floor of the dry box. So the idea is the filament roll positions can be wherever makes sense, and I can swap out any of the rolls independently.