using citric acid to remove rust

forde Part of things Posts: 377	using citric acid to remove rust forde @forde
	Dec 22, 2011 10:51:13 GMT Select Post Deselect Post Link to Post Back to Top
	hey i bought a kg of citric acid powder to mix with water to make citric acid to put bolts etc from my moped in and remove rust, its the stuff you get off ebay that they do wine makin with and all. not sure on quantities? i just want to make a small amount that i can put bolts and stuff into. i saw another guy use it with good results but he made a wheelie bin full and put his moped frame and everything in it haha i just need to make small amounts. so, how much citric powder to water? thanks
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elmotheewokking Posted a lot Posts: 1,553	using citric acid to remove rust elmotheewokking @elmotheewokking
	Dec 22, 2011 11:38:09 GMT Select Post Deselect Post Link to Post Back to Top
	I have no idea, but I did use White Wine Vinegar (it was in the cupboard and no-one here uses it on anything) to clean up a numberplate light, some ARB brackets and a load of old bolts. Came out a treat. Though one of the brackets was more rusty than anticipated and when scraping some melted rubber bush off, I put a hole in it.


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RetroWarwicK Posted a lot Searching...... Posts: 3,922	using citric acid to remove rust RetroWarwicK @maph2
	Dec 22, 2011 12:13:48 GMT Select Post Deselect Post Link to Post Back to Top
	approx one heaped tablespoon to 1L
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DavidB Posted hell of a lot Posts: 5,794	using citric acid to remove rust DavidB @station
	Jan 1, 2012 19:17:39 GMT Select Post Deselect Post Link to Post Back to Top
	It will work on surface rust. Vinegar etc is pretty effective, but a bit disappointing. I used the battery charger method. Put a teaspoon of bicarb of soda in a plastic bowl, attach - to big piece of sacrificial metal which is clamped to the side of the bowl and the + to the part you are derustifying. Within an hour you will see a trail of rust going towards the metal. It 100% removes all rust afterwards.
	Last Edit: Jan 1, 2012 19:18:40 GMT by DavidB

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