I needed a ring adapter for 3dJake reels. The 3dJake reals are 200mm, the same as Bambu reels but they have a smaller inner so when new the filament causes the spool to not spin in the AMS. With this ring adapter they can now be used without respooling or wasting the first several meters of filament.

INSTRUCTIONS FOR USE
When fitted you need to leave the AMS lid open otherwise they interfere. When some of the filament has been used you can remove the adapters and then close the lid.

INSTRUCTIONS FOR PRINTING
When printing you sometimes get some stray strands on the upper part of the adapter. You can simply cut these off and the adapter will work fine. Otherwise you may decide to you your own print profile.,

The rings may need scaling marginally to adapt for your own printer variation. Just adjust the overall by up to 1mm accordingly. The rings will not have a long life but they are quick to print and use almost no filament.

I am tempted to try them in TPU shortly as they will surely have a longer life and allow them to be printed a little tighter. I will update the design if successful.