Knob crown rộng cho vít M3

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!