I’ve tried several filament holders, but they often get stuck and don’t rotate properly when used with the AMS. I designed my own and have been using it without any issue so far - so I’m sharing it here. It’s compatible with all AMS models, so you can simply leave it on the spool, which makes it very convenient. If you plan to use a high-temperature filament dryer, it’s recommended to print it in ABS for better heat resistance