The original Bambu Lab spool holder works well but takes a lot of filament and is missing a few nice features, such as being able to see how much filament is left on your spool, having passthrough holes for respooling, and more places to stick the loose end of your filament.

The original locking mechanism is unchanged, and these will work interchangeably with the original version if you only want to do one side or something. The lock tab is still there for accepting the Bambu Lab refills and the original shims work as well if you want the extra locking power.

I would recommend you print this in something that can withstand a dehydrator. I used ASA.

I printed in 0.2mm layers without supports, with a light glue coating on the bed for ASA.