Abstract: Based on the Fresnel half-wave band interference and laser engraving, a high-frequency self-focusing piezoelectric composite ultrasound transducer (FPCUT) is presented in this article. The ...
Samcraft on MSN
Laser Engraving PURE SILVER
In this video, I test the Atomstack M4 laser engraver on .999 pure silver bullion, specifically a 1 troy ounce piece. Watch ...
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