Just a simple spool adapter for the SunLu 250G spools you can get from Amazon to work on the Bambu Lab AMS. I printed them with .16 .20 and .24 layer thickness without much difference. there is a small pin on this spool that locks it into position on the SunLu spools so that the adapter cannot spin independently.
No supports needed.
Spool is identical on both ends. just print the main body twice.
The author marked this model as their own original creation.