Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ
The authoritative public forum
for Metal Finishing since 1989
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Chemical structure of home made solder flux
What is the chemical structure of the flux that I can made at home to use in soldering of pcbs.
Marof K [last name deleted for privacy by Editor]engineering - Cairo, Egypt
2004
HOOCCH2(OH)C(COOH)CH2COOH.H2O (Common name: citric acid ⇦ this on eBay or Amazon [affil links] )
Tom Gallant- Long Beach, California, USA
2004
The type of flux you need is dependent on the job it is for. If you need it for a plumbing job, you will need a more aggressive flux than, say, for electronics. I suggest you go to a shop that caters for your type of needs and buy some.
Trevor Crichton
R&D practical scientist
Chesham, Bucks, UK
2004
Lemon juice makes a fair replacement for light soldering jobs. Just squeeze a little juice from a lemon and use a brush or Q-tips ⇦ this on eBay or Amazon [affil links] to apply it. The joint should look shiny when finished, if not it may not be a good connection. Try again. I hope this helps.
Chris Lewiscomputer help - Sun Valley, California, USA
May 14, 2008
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