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But before you do, prop one end up on a piece of scrap metal... then see how many blows it'll take.
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I think the idea was to get it to haze/crack, not snap

, how well do you think Cu or ALu would stand up to this scientific test

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I'm under the belief that simply drilling a hole in it will cause microcracks to form. Threading the hole after that will likely make it worse.
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That's what I thought, but I can't see it mattering under normal usage (ie, Gorrila and 24inch pipe wrench[not]), but then again I think these failures would happen anyway without the microfissures being the starting point the way some people ham fist Lexan tops :shrug: , using allen bolts without washers, torquing up NPT barbs till they're tight as a mouses ear. I hav'nt heard of a failure yet that was a result of 'factory fitting'...
I'm interested in seeing how it stands up with two or three holes drilled into it as well, a normal water jacket scenario, not that ballpane hammers come into a normal water jacket scenario... often

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