Python - Adaptive Spool Holder

Update March 13, 2026 The spool holder spring core files have been updated to version 1.01. The springs are now a little stronger, the gap against the large spool gear is reduced by 0.5 mm and a new version has been added: XXL. It fits spools from around 75-90 mm, it's mostly useful for refill spools with a cardboard center or other odd sized spools. Thanks to andrews on MakerWorld for the support and suggestions. About The Python - Adaptive Spool Holder is an alternative to the standard Python Spool Holder. It automatically centers spools with a center hole diameter between ~45 and 60 mm so basically 98% of all common spools. There is an XL version available of the spring as well if your spools have an even larger center hole diameter, that one is suitable for spools with a center hole diameter of around 60 to 75 mm. It is compatible with both Python for the original AMS and Python for the AMS 2 PRO. The spool core of the holder uses a spring mechanism to automatically center the