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Old 12-08-2022, 01:07 PM   #14 (permalink)
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Hot Rod

Originally Posted by freebeard View Post
I'd suspect steel strips were rolled into contour, punched and dimple died in a series of passes. Hot rod parts are one-offs.
I was referring to something that might be used to mass-produce low-loss inlet openings for the 'wall of fans.'
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