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  #61  
Old 04-29-2019, 11:10 AM
sblack sblack is offline
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Originally Posted by crystallographic View Post
Yes, I got it to lay down nicely all over. One piece, like orig. Got lucky early on when I started in the right areas.
"Well, for you welding is a non-event!!!" Funny guy with a lot of smarts, loads of experience, and a ton of courage. Prof of EE at U of AR for decades. Patents on auto pilots kept his coin flowing.
I had no idea he was a professor. I just figured he had been playing with airplanes his whole life. No wonder he stayed with airplanes - he had a reliable revenue stream . I'd love to meet him one day.
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  #62  
Old 08-10-2021, 01:22 PM
crystallographic crystallographic is offline
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Default Heavy hammer for heavy metal shapes

One of my longtime students and very good friend George:


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You have to do what it takes to get the job done.
Copper, .125", riveted, Celtic design.

Linear hammering around edge makes flat curved (stretched/expanded) shape. Return is shrunk/gathered incrementally.

Keep all dead flat, and no leaks.
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"All it takes is a little practical experience to blow the he!! out of a perfectly good theory." --- Lloyd Rosenquist, charter member AWS, 1919.

Last edited by crystallographic; 08-10-2021 at 01:25 PM.
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