Keep your filament Dry while printing.

We all know how important it is to keep our filament dry but it's a pain taking it in and out of the ziplock bag. What's more, while you're printing, your filament is exposed to the air. Nylon and PVA can start deteriorating within hours of exposure.

These rollers are designed to fit perfectly into an IKEA box (Samla 39x28x28 #798.508.75). With a bit of weather stripping and lid clips you can print directly from your dry box.

This 3-spool version uses the tubes and bearings that come with the Prusa MMU2 kit and has space for two 100mm wide reels (same as MMU2 rollers) and one 86mm (wide enough for Prusament 70mm reels).

There are two options for the dry box screws; the Festo Screw and the PTFE screw. The former has threads for screwing in a Festo connector and the later is just a 3mm hole that you can push a piece of PTFE tubing through.

For a 4-spool version (all wide enough for 70mm Prusament spools) see https://www.prusaprinters.org/prints/8018-ikea-dry-box-rollers-4-spools-of-prusament