This is a remix of the Fusion Filaments master spool to fit in the Bambu Lab AMS. https://thangs.com/designer/fusionfilaments/3d-model/Fusion%20Filaments%22 Modified from with their STEP file, included mine here. I shaved off 2mm of the outer rings on each side, leaving this about 69mm wide, (68.97) and 198.5 diameter to fit with the lid closed. Two halves, print in any settings you like, kept the cutouts to reduce material usage.