I liked the previous Proto-Pasta 500g spool adapter for the AMS, but weight can be an issue so I wanted to make a few changes that include a narrower center opening to accommodate the Adjustable Spool Holder for Silica Gel / Spool Weight by @humebeam. I also added various locations to hold the end of the filament when the spool isn't in use.

There is a version with a place to put a label as well. You can either print one of each version or two of either, whichever works for your needs.

Just like with the original design it's necessary to rip off the existing cardboard sides and insert these as replacements. It's a tight fit, so you may need to trim off the excess glue if there's a lot, but it definitely slots in there no problem.

UPDATE:

There is now a Version 2 that is a little thicker with diagonal holes for holding the filament end with minimal bend inspired by the filament tunnels on This Design for 100g Proto-Pasta samples by @Sneaks.

I printed in PLA with 15% infill and a 0.4mm nozzle at .2mm layer height on standard settings on the Bambu slicer.