I tried a few different custom spools and found this version from @torbenger. I love how sturdy and lightweight it is. After creating a few of them, I saw two shortcomings and tried to improve them. So, this version has two improvements over the torbenger's version (as pictured): 1. Added AMS2-compatible filament holders. You can safely tug-in the filament during storage or while you are drying your filament in AMS2. 2. Added (back) a window for Bambu Lab filament stickers.

My wife likes this brush and uses it a lot. After some heavy use, the original connector got broken. The spare parts are not always available for cheap tools but we didn't want to throw away a perfectly good scrubber. So, I designed this piece to replace the broken part and we have been using it since. It give the tool a new life and we reduced electronic waste. This is why I love my 3D printer.