Ferric Chloride Alternative

[redboat219]

I'll need to etch the white metal fittings on my Kilo and Seawolf models for better paint adhesion but I don't know if I can get Ferric chloride locally.
What would be a readily available alternative?
Since I know it's an acid can I use household "Muriatic" or hydrochloric acid?
How about drain cleaners?

[He Who Shall Not Be Named]

Overnight soak in vinegar will do it.

David,

[redboat219]

Overnight soak in vinegar will do it.

David,

Of course, if you want to pickle something you got to use good old vinegar.