Thanks. Not sure I'd actually go to the bother of doing it, I was just curious because I thought it might look neat after helping my 4 y.o. daughter with a "science experiment" making pennies green (and vinegar baking soda volcanoes).
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Bikes: 1996 Eddy Merckx Titanium EX, 1989/90 Colnago Super(issimo?) Piu(?), 1990 Concorde Aquila(hit by car while riding), others in build queue "when I get the time"