If you bead-roll a curve, I could retire that old pic. 
Might need to shrink the 90° flange.
youtu.be: Home Made Sheet Metal Shrinking Tool
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.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
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.Because much of what is in the published literature is nonsense,
and much of what isn’t nonsense is not in the scientific literature.
-- Sabine Hossenfelder
Last edited by freebeard; 09-02-2020 at 07:07 PM..
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