Water jet sign.
The guys at Kaistar R&D have the most marvelous computer-controlled waterjet: It cuts through just about anything, including thick tungsten plate, using nothing but a jet of water (mixed with garnet abrasive). Admittedly it's a very, very high pressure jet of water, but still, it's cutting with water and that's amazing. The machine has a computer terminal with a CAD program built in, and Philip Kapchenko very kindly programmed it to cut this sign for me. Since they deal only with the highest purity metals I'm listing this as four-nines purity: That's probably conservative.
Source: Kaistar R&D
Contributor: Kaistar R&D
Acquired: 15 October, 2004
Price: Donated
Size: 12"
Purity: 99.99%
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