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I finally fixed a seized seatpost that took me two whole days
It was a steel post in an aluminum frame, totally frozen from rust. I tried everything, from a ton of penetrating oil to a bench vise and a big pipe wrench. Ended up having to carefully cut it out in sections with a hacksaw, which was a huge pain. Anyone have a better trick for this mess?
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victor2197d ago
Man, that sounds brutal. I've heard of people using a mixture of acetone and automatic transmission fluid as a penetrant, way stronger than the store-bought stuff. Freezing the post with canned air can sometimes shock it loose too, but once you're at the hacksaw stage, you're already in survival mode lol.
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victorb517d agoTop Commenter
The acetone and ATF mix is a good tip, but calling it a penetrant is a bit off. It's a home made cutting oil for drilling or tapping metal, not really for freeing rusted threads. For that, you're better off with the real stuff like Kroil or even a 50/50 mix of acetone and ATF shaken up and brushed on. Freezing it with canned air, like @victor219 said, is a solid move though. The shock from the cold can break the bond when a penetrant can't.
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