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Old 11-09-2009, 06:09 AM
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345 desoto 345 desoto is offline
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If you go to a "Tractor Supply", or "Farm and Home Center", or one of the places like that, they sell a product called "Milk Stone Remover". It's used by Dairymen to rinse the calcium film build-up off of the inside of their milk storage tanks. What it is is Phosphoric acid, it comes in gallon plastic jugs, and it will remove rust FAST. I use it to full strength to soak nuts, bolts, radiator hose clamps, rubber parts, etc., etc. 100% safe on any kind of rubber. Costs about $13 A GALLON. If you can get the iron/steel part into it, it WILL take the rust away...right down to the bottom of tiny pits. Unlike any of the other acids, it will not eat the metal at all, only the rust. Much safer than any other acid, but you still need to wear gloves...just to be safe. After the rust is gone, a hit on the wire wheel makes the part look better than new. I've been using it for years, and it's a real life saver on rusty crap...
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