Sunlu Spool Adapter for Cardboard Spools

Update 1/18/2025 - Added two additional adapter sizes: 76mm and 80.4mm to support additional filament brandsI have tested this on multiple types of elegoo rolls and 3DHojor and eSun. Use at your own risk. If you are not careful with removing the cardboard flanges the filament can become unwound and not fit properly. ⚠️ For the best success, please measure the Inner Diameter of an empty spool first and then select the adapter with the closest measurement (82mm, 80.4mm, 76mm) ⚠️Bambulab filament is fantastic, but sometimes you just can't beat the convenience of getting affordable filament delivered from Amazon in 1-2 days. This has left me with a collection of empty reusable Sunlu spools and plenty of filament on cardboard spools.This adapter solves both problems. It allows you to repurpose your leftover Sunlu spools by adapting them to fit the core of cardboard filament spools. By bridging the gap between the two, it makes your cardboard spools fully compatible with Bambulab AMS uni