Wide crown knob for M3 screw
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A wide crown remix of Elothan's knurled thumbscrew
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Model information
- Source
- Printables
- Category
- Mechanical Parts
- License
- Creative Commons — Attribution — Noncommercial — Share Alike
I love skroob's sanding block model, but the knob was a little hard to turn, so I remixed Elothan's knurled thumbscrew design to have a wider crown to provide a more comfortable knob. This should work in just about any material, but I found that printing in TPU made for a really nice feel and function in this application.
This knob uses an M3 socket cap or button head screw and nut. Just add a drop of superglue under the screw head just before snugging it down to hold the nut and screw in place.
For the sanding block, the screw should be 22-25mm in length - if 25mm, you'll have to drill a little clearance hole in the sanding block.
Printing Parameters
- Any material, but TPU recommended.
- 0.2mm layer height.
- 4 walls
- 20% infill
- No supports necessary!