Automatic Spool Holder
youmagine
It automatically dispenses itself.\nA modified spool holder takes it beyond the basics. \n\nSimply insert a spool and feed the filament straight through the hole, then it automatically dispenses.\n\nThis prevents the filament from unraveling or tangling, especially with direct feed extruders. You can also add foam for a dust filter on your filament.\n\nIt's additionally useful for 3D printers where an alternative spool holder would be more convenient for spools up to around one kilogram of filament.
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