"tiny" is an understatement. One 'feels' the expert reasoning. You didn't waste your time with C'A'D. A wonderful video. And thank you for the music.
I will stop my overly simplistic tool grinder tries and start anew applying your principles and techniques.
Usable Hardness Testers are scarce at Homemade Tools.
The same Michel Uphoff shows a (very well thought out) precise yet economicVickers Hardness tester.
Parts 1 ... 3:
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