Filament Spool Adapter
thingiverse
To enhance feeds from a spool tower, place your filament in the spool's middle hole, reducing its size. If you possess Writescad's text/string library, 'Midwire Tech' will be imprinted on the adapter's inside. Print two of these and insert them into opposite sides of your filament spool; lack of the Writescad library won't affect this feature.
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