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Helical Gear Pencil Holder

3D model description

This is a helical gear pencil holder. I got the idea from AdditiveTech's Helical Gear Cups on Thingverse. However I didn't want to use bearings. I re-worked this in SolidWorks to make a more aggressive helical gear. Then I created press fit pins and bushings to hold it all together.

The pins are press fit into the bushings and the base. I used a 2 x 4 with a 1" hole drilled in it and a rubber mallet to hammer the pins into the bushings. Then I used a 1/2" dowel and a rubber mallet to hammer the pin and bushing assemblies into the base. This will create a 1mm loose running fit between the bushings and helical gears.

3D printing settings

Printer: Dremel 3D45
Rafts: No
Supports: No
Resolution: 0.1mm
Infill: 20%

  • 3D model format: STL





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