Quote:
Originally Posted by cp43
I think Coke eats the corrosion. I've seen it done on corrosion on car battery terminals. Never tried it myself, and I hadn't heard of it for this use before. YMMV.
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Perhaps I wasn't patient enough, but Coke didn't work, ammonia didn't work, PB Blaster, Kroil, 3n1 mixed with K-1 didn't work. Nor did force, via impact or torque. Tired of the hacksaw routine, so went to caustic lye. Job done. Not without it's challenges, but it worked.
The gases evolved in dissolution of aluminum (hydrogen) are flammable, explosive only if confined. Do it outdoors, wear proper PPE and DO NOT mix the caustic lye and water by shaking in a sealed container. Swirl in open cup. Exothermic reaction, sealed container go boom and you will be sporting some new chemical burns. Guys in a plating shop don't worry about hex chrome (carcinogen) but give sodium hydroxide serious respect.
Don't mess around with NaOH. Your eyes won't grow back.