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Universal Spool Holder 3D Printable Models
A narrowed version of protywu's ultra compact and low profile filament holder.
Thingiverse
ReverendJack
double filament spool holder
Thingiverse
Proto3DLab
16mm Rod Filament Spool Holder
MakerWorld
BoandL
Self-Centering Filament Spool Holder – 1KG 3KG 5KG
MakerWorld
Daniel López