Spool Insert

Spool Insert

thingiverse

Inserts fit perfectly onto filament spools that boast a 2.25-inch inner diameter. An 8mm rod snugly fits into the inner hole of this insert. These inserts are compatible with Worksteel, 3D Solutech, and other brands. They're designed to conserve material by having strategically cut darts on the cylinder's surface.

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