etching stainless black/dark gray?

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inferno

inferno

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What etchants can be used for this?
And which one is easiest to find?
 
inferno said:
What etchants can be used for this?
And which one is easiest to find?
Click to expand...

It depends on the steel, but I find that CPM154 etches nicely with ferric chloride... a 3/1 mixture of distilled water and FC works well for me. I don't have much experience with etching other types of stainless, so your miles may vary with some of the others...
 
Heated muriatic/phosphorous acid. 40-60 C, you can buy it in any general paintstore (färghandel, saltsyra)

Outdoors, protect yourself, real nasty stuff.
 
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