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Post by jackbaynes on Dec 22, 2005 19:49:26 GMT
Have just read a thread regarding the process of pickling and would appreciate any comments regarding the use of citric acid as opposed to sulphuric. I have been using citric acid- about 4 small packets ( as bought from the chemists) to a bucket of water. Leaving the work in for a couple of hours seemed to do the trick but I've no idea of the correct mixture.
I was surprised to read that you could get sulphuric from a motoring shop, maybe I should go for that.
jack.
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Post by Peter W. on Dec 22, 2005 20:10:16 GMT
I read in Model Engineer some years ago, to use
a tablespoon of powder to a pint of water.
I've used that for small mild steel & brass fabrications
(Easyflo 2) and it works fine. I usually leave the results in the citric acid overnight and give them a good scrub in the morning.
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Post by Peter W. on Dec 22, 2005 20:18:31 GMT
Here's something I've just checked in EIM, Dec 2003.
"Hotspur" :-
" Wash off the flux in the usual way and put the part in the pickle bath overnight. I now use 1/2 Kg cartons of citric acid crystals bought from my local chemist. The crystals are dissolved by adding them to six pints of tepid water and stirred to give a clear yellow liquid."
All the best.
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Post by jackbaynes on Dec 22, 2005 20:47:03 GMT
EMI, Dec 2003. That's where I must have read about citric acid. Thanks for that Peter W.
Jack.
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