For Bambu Refill Filament
I prefer a safer threaded master spool. This way I avoid any kind of accident. It is made for multi-color and single color. Compatible with AMS, AMS lite and Python mode (thanks to @EricMakesStuff for confirmation).

 

Updates:

Version 2.2 - 23.11.2025

• Add a hole in the spool's center when you need to wind a non-Bambu on to the spool

Version 2.1 - 01.12.2024:

• Update outer diameter for better fit.
   

Version 2 - 23.11.2024:

• Chamfer in the middle to make it easier to insert the cardboard
• A new system of holes for inserting the filament for easy stacking the spools