Simple steel etching process

[evansd2]

Huh this would be easy to do with a GF and masking:

Here's an easy way to etch something on steel

[johnbrooker]

And it will work with brass, as well, and I think aluminium too, but not tried it.
John

[Jules]

Dang, I can do that! Got all the parts leftover from those silver ion generators.