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Filament Spool Shaft w/ Proper Friction

3D model description

My design of this filament spool shaft is to be used together with the original Anycubic I3 Mega acrylic spool holder. It can also be used with similar stands. Designed shaft has two threaded conical flanges to tighten and clamp filament spool with various center hole sizes.
There are two bearings on each side of the shaft for consistent turning. Bearings are great for smooth action but they come with a disadvantage of having too much unwinding of the attached spool due to very little friction against the rotation. Thus, there must be something that induces a proper resistance against extreme unwinding of the spool. For this purpose, I use a rubber piece on each side of the shaft. They are placed inside the shaft and secured on the bolts. For detailed assembling procedure, please see the attached video
(NB. Any further improvement ideas on this design would be welcome.)

Complete bill of material is as follows;

Steel Parts:
M10 Hex Head Steel Bolt ( 2 ea.)
M10 Nut ( 4 ea.)
Washer (10.5 x 19.5 mm) ( 6 ea.)
Bearing 6001-Z ( 2 ea.)

3D Printed Parts:
BODY_FEMALE ( 1 ea.)
BODY_MALE ( 1 ea.)
BOLT_CAP ( 2 ea.)
FLANGE ( 2 ea.)

Rubber Parts:
2.5 x 2.5 cm (or 3 x 3 cm, or bigger?) Square
with 5mm. dia. center hole ( 2 ea.)

  • 3D model format: STL



Designs 42
Downloads 606

Mechanical Engineer, Software Developer, Designer, Maker



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