Goniometer

Laser goniometer for measuring grinding angles on knives before or after sharpening.

The laser I use is a cheap laser pointer with 14mm diameter. For example: https://de.aliexpress.com/item/33014615220.html

The radius of the arc is 180mm, so it can be used with either the supplied ruler (pdf which I currently can't upload for some reason). Ensure you print the ruler at 100% size, and that it comes out at 180mm. 1 degree = 2mm. Since PDF uploads does not work anymore, I have added an SVG file. Just make sure that it prints to 180mm.

If you print and sell this item, you must buy a beer for a local nerd, do something nice to someone you don't know, or let someone crash on your sofa.

Link to Fusion360 design: https://a360.co/3IP2RFJ

Print instructions:

• I use PLA
• I could print this without supports
• I used a brim to make the item stick properly to the print bed