pot metal or aluminum
I'm having a problem distinquishing pot metal from aluminum to me the part I have looks like aluminum its from a japanese motorcycle.I put it in the Zincate and it started to react violently when I dipped it.Also did it when I put it in pickle #4 is it pot metal?.If it is what is the procedure for pot metal(sp degreaser-sandblast-pickle #4 and then flash copper?). I tried zincate then flash copper but I'm having a problem with lifting in certain spots(sandblast-zincate-flash copper) . Do you think I should zincate then strike coat with nickel then copper?.Thanks for any help.
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