External Filament Stabilizer

The purpose of this model is to allow the external filament spool on my A1 Mini to unwind evenly so as to reduce filament tangles. The external spool holder diameter is much smaller than the normal spool hole diameter. I noticed that when the filament is fed the spool can wobble slightly left and right on it's axis due to the uneven tension as the filament is pulled from the different layers. This sometimes causes filament tangle even when the filament is properly wound. This model increases the diameter of the external spool mount to 52mm in diameter to more closely match the filament spool hole diameter so the wobble is eliminated and the filament is more smoothly fed into the printer.