Dry Box Guide

These guide ‘wheels’ are quite simple and work with my PolyBox (DryBox) so that I can run two reels from a dry box and two reels on the build-in MK3S holder. I live near the coast and we are entering the humid season. I have 2 reels of PETG that I use only sparingly and so I put them in the dry box so they wouldn't just be sitting around for a long time absorbing water. At 30% humidity, I keep two PLA spools on the holder and use them regularly. The guide wheels don't rotate, but just clip onto the existing molder. I printed in PETG as it has a bit slicker surface, but PLA should work fine. .3 or .2 is fine for printing. 

My setup has the MK3S on the Walmart version of the Ikea Lack Table with the PolyBox on the floor at the back of the table, with the filament coming out of the top of the plastic cover. I had run a teflon tube the entire way from the dry box to the filament guide tube at: 

https://www.prusaprinters.org/prints/74920-filament-tube-guide-for-6-pc4-m10-connectors-prusa/comments#comment-180640

but the resistance was too great. Simply having a short amount at the dry box and a 4mm tube at the spool has worked great.