thingiverse
Goniometer
This is a Laser Goniometer to measure the angle of a knife edge.
It can measure knifes up to 70mm wide.
It's made for one of those cheap laser pointers with a diameter of approximately 13mm, but is easily modified to accept other diameter lasers.
Holes in holder are 4mm, so you can tap the for a 5mm bolt or setscrew to hold the laser. Or just use hot glue.
Markings and letters are embossed into the surface, so no need to glue your own scale into it. I just painted over the letters and markings with a sharpie, and wiped it of with alcohol, to have the markings show up clearer. I'm sure you can do a neater job than I did :)
It's designed fully parametric in Fusion, so by request, I can make it any size you need by request. I do however find that this is a great size, that fits almost all knives.
Direct link to the original creator's page
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How do I download Goniometer?
Click the "View on thingiverse" button above to visit the original model page on thingiverse. You can download the STL file directly from the creator's page for free.
What 3D printer can I use for this model?
This STL file is compatible with most FDM 3D printers (Creality Ender 3, Prusa MK3S+, Bambu Lab, etc.) and resin printers (Elegoo, Anycubic). Check the original page for recommended print settings and materials.
Is this 3D model free to download?
Yes, this model is available as a free download on thingiverse. Some creators accept tips or donations.
Can I modify this STL file?
Most STL files can be modified using free software like Blender, TinkerCAD, or Meshmixer. Check the license on the original thingiverse page to see if modifications are permitted by the creator.