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Bearing Spool Holder
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It doesn't get much smoother than this! Screw it over your spool, and drop it into any 20mm gap. Works well with current filament holders, as well as the my UM Spool Holder.
REQUIRED MATERIALS:
4x M4 Nuts
4x M4 Hex Socket Bolt - NOT pan head, (15mm thread length)
2x M3 hex socket bolt (20mm Thread length)
2x M3 Hex nuts, Locking
2x M3 Hex Nuts, Locking, or a spring or object with a 3mm inside diameter and an outside diameter not larger than 5mm, and about 3-10mm long
2x 623ZZ Bearings
REQUIRED MATERIALS:
4x M4 Nuts
4x M4 Hex Socket Bolt - NOT pan head, (15mm thread length)
2x M3 hex socket bolt (20mm Thread length)
2x M3 Hex nuts, Locking
2x M3 Hex Nuts, Locking, or a spring or object with a 3mm inside diameter and an outside diameter not larger than 5mm, and about 3-10mm long
2x 623ZZ Bearings
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