Black anodize dye doesn't take
I black anodized a part.
The part was cleaned, anodized in battery acid and then dipped in distilled water with a few drops of Caswell black dye. Everything went well.
I have tried the same process several times again with different parts. No matter what I do he parts do not take the dye.
I do not understand why the process doesn't work.
Can anyione suggest what I'm doing wrong?
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