Spool roller with desiccant for Rubbermaid 21 cup (5 liter) storage container

thingiverse

*Caution: the pins on the side parts are troublesome to print and fragile (even with 100% infill) if printed vertically for maximum smoothness against the rollers, I'm thinking of either changing the design or just printing those laying on their side with supports (and sanding after for smoothness)* After discovering that the Rubbermaid 21 cup storage containers [amazon link](https://amazon.com/Rubbermaid-21-Cup-Dry-Food-Container/dp/B00XJRMW5M) are a nice size for storing 1 kg spools of filament, I wanted a way to use the spools without removing them from the container. There are several reasonable designs for rollers using 608ZZ bearings, but decent ball bearings are expensive and probably complete overkill for this application. So I designed this thing, and the bearing is some scrap hard acrylic tubing that forms the rollers (1/4" inside diameter, would need to change the OpenSCAD source if using a different size) on the 3D printed PLA pins with a little dry lubricant (PTFE, graphite, etc.) on the bearing surface. I also wanted to stick some desiccant in there so I made a tray built into the base of this.