Reusable spool for Bambu Lab refill

I designed this spool for Bambulab refills, complete with 8 attachment points (there's a 45° angle from one attachment point to the next).On the inside of the label, I drew a scale indicating the amount of filament remaining.There are only a few supports to remove, and I had no difficulty removing them.If the supports are removed carefully, the spool will assemble correctly.The direction of rotation for locking is indicated on the inside edge.Locking the spool requires a fair amount of force during the first few uses.Removing the spool requires more force than installing it (this is to ensure the spool doesn't come apart easily).I think I did a great job, but above all, this spool comes complete with everything needed for complete use without the need for additional accessories.The print time was 6 hours 22 minutes (excellent for a spool of this quality).I used 200 grams of PLA (with less material, the ends would have flared out, and the filament would have risked getting stuck