snapperhead wrote:Copper is copper, so as long as it can be cleaned back to new, it can be used. Fire is a great way to turn the oil back into carbon, then mild acids and mechanical scrubbing may get the residues off. If you arent confident that you could clean up the internal bore to a sanitary state, what about cashing it in at the scrap yard and buying some clean, unused pipe back off them with the proceeds ?
I used electrolytic cleaning in a large bath of washing soda, to get the socks and underpants flavour out of my old laundry coppers. A bath of sodium carbonate solution (washing soda), thick steel plate anode in the bath connected to the positive terminal of a battery charger, negative terminal connected to the piece you want to clean. Its a very non-labour intensive way to clean copper. (just dont let the steel anode touch the copper as you will melt your charger)
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