Sunlu Spool Converter for Bambu Lab Refills

This adapter is to convert empty Sunlu spools by widening the walls of spools for Bambu Lab filament refills. I like the idea of Bambu Lab's filament refills. It saves the environment by putting less empty spools in the land fills or into recycle process and saves cost on 3D printing. Typical problems I encountered from using other converters in the market:Breaking retention tabs.Spool halves are separated or getting loose during printing or during unloading from AMS.Adapter is so hard to be assembled on an empty Sunlu spools.No retention “tab” to grab the notch on refill's cardboard tube. This prevents the function of AMS lite which has auto spool/filament retraction when changing filaments. The filament must rotate with the spool.I modelled this adapter to solve the above problems. Key features of this Sunlu Spool Converter:Thank you for the comments from users. I learned that there are different SUNLU Spool sizes out in the market. It looks SUNLU has been changing their spoo