About this 3D model

Recommend PETG Where a full/mostly full spool can unwind due to the gantry movement at the start of a print. The filament gets wrapped around the arm and then causes a jam.so you need tension holder prevent it. The spring loaded tension holders can be bought separately from the ams, so you have a tentioned holder. Caution: After printing, please fold it first to see if it is strong.Bad and wet filament will be weak. Clean the brim and put some greace on the thread.Will make your installation smoother. NEED BUY AMS lite Rotary Spool Holder (yellow right side)(green left side) https://store.bambulab.com/collections/accessories-for-a1-mini?page=3