Dry filament storage boxes

prusaprinters

<p>As wife has a lot of different filament colors she needed dry storage. We tried solutions where you feed directly from the box but the results weren't encouraging. A much simpler solution would do the job too.</p><p>To prevent the spools getting contaminated with silica gel they have to be slightly above the bottom. I achieved that by placing them on a DN32 HT-pipe which is held with two brackets at the side. These are held by two M6 screws and locknuts.</p><p>As boxes we used the house brand of a home improvement store, Bauhaus, which is only in D, A and CH. Their boxes are sturdier than the usually used IKEA ones plus they also ship them whereas IKEA doesn't do that any more. The Regalux Box Clear S is just the right size for four spools.</p><p>Unfortunately no clips are available for that size. One can modify the ones for the larger versions with a glued on spacer but they are a pain in the but to clamp on. That's why I designed my own clip. It might actually better to use 6 narrower clips (20mm) instead of 4 wider clips (35mm) so I provided both STLs.</p><p>For the mounting bracket of the DN32 pipe I first designed a square plate (V1) but I recognized that that's just a waste of filament and rounded the bottom corners (V2).</p><p>We just pour some silica gel on the bottom of the box and regenerate it once it changed color. It usually lasts for around 3-4 months with 750g of silica gel.</p><p>In one box I installed a small Chinese Hygrometer with a printed ring. Only needs holes for the M3 mounting screws.</p><p>Print parameters: 0.3mm layer height, adaptive layers. Infill 10% (clips 20%) cubic with dual-line, no rafts and no support. I used "el cheapo" PLA, 8.50€/kg but poor print quality, but any material will do.</p><p>If you want to try it as your printer may do better than ours you can also install the DN32 pipe further up, use it as an axle for the spools and install some feed-thrus in the box wall.</p>