Re: Copy Cad Zinc Blackener
I have tried to blacken this piece 8 times, thoroughly stripping it back to the shiny metal each time beforehand, but still it only turns out brown, and now I have used up all the concentrate.
I have since noticed from other posts on this forum that the instructions are wrong, and that I should be mixing the solution 1 to 4. The container I have says 'Copy Cad & Zinc Blackener New Formula' and the label advises to mix 1 part to 9 parts of distilled water. Since I live in the UK I bought it from Caswell Europe - would they be willing to provide me with a replacement container of concentrate?
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