Etchant for steel

[nieradka]

Does anyone know of a good, comparatively safe etchant for steel enclosures? Ive been using copper sulphate, which is slow, and Im finding it hard to get fine detail, and anything thats not lacquer/or nail polish as a resist, breaks down quickly. Is there anything better that doesnt require a hood/full respirator?

[gtr2]

You could do electrolytic etching.

Josh