Dry Box for Prusa MMU2 Spool Trays

thingiverse

I had my first experience with bad prints due to moist filament since I installed the MMU2S kit. Because it is such a pain to thread the five spools, I was leaving them out. With a single spool I always put the filament back in the ziplock bag and a silica gel packet. I ended up getting a SUNLU filament dryer, but buying five would be expensive! I figured I would just fill the trays with Silica Gel beads and 3D print a cover using transparent PETG. The design had to work around the MK3S print volume. I installed a temperature / humidity sensor to make sure everything is OK. I tried single and double wall boxes, but they failed. I ended up 4 filament wide walls. It's a long print, but I'm pretty happy how they are working. items used: I had nice short Amazon links here of the parts I used, but Thingiverse edited my summary and changed all the links so they could make money off of them. Check out the models on https://www.prusaprinters.org/social/48277-simple3d/prints Sorry for the inconvenience :-(