DIY Filament Dryer

**EDIT 11/25/25: I updated the design to better fit the thermostat and made the built in support easier to remove and less filament waste. Also updated reinforced the rear tongue and groove for a better hold and protruded the spring button out farther so it doesn't get stuck in the frame. I wanted to customize it to work like the Polymaker Dryer system using Cereal Boxes. I'm using the ones designed by @GunplaMark https://www.printables.com/model/1249376-the-ultimate-cereal-container-filament-drybox. This should with any, you just might need to turn the thermostat the other way around. I'm a total noob to CAD and 3d printing so willing to take suggestions on changes. My dryer is designed to work with either the Shigeer (I believe they're the same the ones from Ali Express ) or the Praki Cereal containers. I already had quite a few 80mm computer fans laying around and a few old 12v transformers for obsolete routers so I bought the cheapest PTC heater and thermostat I could find. All in