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Finally got a seized seatpost out of a 90s Trek with a bag of ice and a heat gun.

After three days of soaking it in penetrating oil did nothing, I froze the post for an hour, then heated the frame tube for 30 seconds, and it twisted right out.
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3 Comments
lilykelly
lilykelly28d ago
My old shop teacher swore by penetrating oil for stuck parts. After seeing this thermal shock trick work on a vintage Schwinn last year, I'm a total convert. It just breaks the bond in a way chemicals can't.
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sean_hill9
sean_hill924d ago
Ever try the hot water trick on a frozen car lock? Works like magic when nothing else will, and it's way faster than waiting for oil to soak in. That thermal shock really is something else.
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john_flores
Totally get why you'd switch, @lilykelly, but I still keep a can of penetrant on hand for when heat isn't an option.
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