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you said all you put in the solution was two pieces of magnetic scrap and a piece of brass. steel turns black in hcl and brass is copper and zinc. so unless you have a gremlin running around and putting stuff in your solution it has to be copper.maybe the zinc in the brass caused the copper to create these crystals. without a picture its hard to make a guess and even with one it still would be a guess. the next time you try to cement values, use a piece of just regular copper pipe.

[QUOTE="Geo, post: 138489, member: 16722"] you said all you put in the solution was two pieces of magnetic scrap and a piece of brass. steel turns black in hcl and brass is copper and zinc. so unless you have a gremlin running around and putting stuff in your solution it has to be copper.maybe the zinc in the brass caused the copper to create these crystals. without a picture its hard to make a guess and even with one it still would be a guess. the next time you try to cement values, use a piece of just regular copper pipe. [/QUOTE]

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