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[identity profile] niac.livejournal.com
Thursday, December 16th, 2010 09:50 pm (UTC)
For steel construction, I'd suggest looking at 4130 alloy steel -- twice as strong as hot rolled steel, and only 1/3rd more expensive. I'm looking at building the Air Kraken with 4130 tube because I want to keep the weight down, and the strength up.

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