I designed this Spool Adapter for the Bambu Lab AMS for my Elegoo cardboard spools, since none of the other adapters currently available fit it properly. This design utilizes the holes of the carboard spools to help lock the adapter in place as well as an anti-slip lip at the top (prints without supports) that will prevent the adapter from coming loose inside the AMS. I exported this as a high quality STL and as a result the curves on the outside have no flat edges and will spin easily inside the AMS. The model only uses 12g of filament.

Orientation of the holes DOES matter for this model. The 2 sets of pegs MUST be lined up with the BOTTOM sets of holes on the spool, assuming that the “top” of the spool is where the logo is. See the images above to see an example of correct orientation. Please do not give me a bad rating because you did not read this and think the adapter doesn't fit.