I don’t even know that one. Do they mean a flat chunk of metal? I only know the military usage (for personnel assignments)
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Replying to @Pinboard
What they *really* mean is “Machined from bar stock,” but nobody knows WTF bar stock is, so people use billet improperly
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Replying to @gak_pdx
I’m surprised they don’t talk about making it from a “single crystal of aluminum”
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Replying to @Pinboard
haha… Boeing is actually doing that, in titanium. Liquid Metal is basically just that as well.
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Replying to @gak_pdx
oh do you know the fun anecdote about how Boeing got the Russians to teach them how to machine titanium?
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Replying to @Pinboard
No idea… except I see trucks with boatloads of russian text on them driving to the Boeing gear factory here, assuming it’s all Ti
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Replying to @gak_pdx
at one point this was sketched on the tablecloth, which the Russians took home. This is in Joe Sutter’s autobiography
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Replying to @Pinboard
Fun fact; engines are held on with only 2 big bolts. They are made here in PDX, super old-school. Each has a phonebook of docs
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Replying to @gak_pdx
yeah! they’re designed that way to shear off, right?
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Replying to @Pinboard
$4k each beautiful, with astonishingly perfect threads. It’s like holding an 8 pound part of a Swiss watch.
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there’s something amazing about big things built to high tolerance. Imagine the juice you could press with it
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Replying to @Pinboard
Personally, I get off on the crazy lightweight stuff. Like a GE carbon/titanium fan blade.pic.twitter.com/i7nMAtM7C2
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