This is an extender to reuse a food deshydrator as filament dryer. The original one comes with blades and there is no room for a reel. I printed it in two identical pieces and glue them to get a single tube of 32cm wide with exact external diameters for the device and its cap.
I could print it in a single pieces with my Tronxy X5S but was worry to print at the very edge of my heatedbed.
It still require some supports but they are minor, for the tabs that glue both parts.
Only works with my deshydrator model, though. I designed with OnShape so can be parameterized. Here: