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Acid etching my knives

Fri Jul 12, 2013 7:38 pm

I have seen some info on the net about people acid etching pocket knives, straight razors, and kitchen knives as well using various acids and techniques. What kind of benefit does this provide cause some of it seems aesthetic.

Re: Acid etching my knives

Fri Jul 12, 2013 9:06 pm

It's purely an aesthetic thing.

Acid etching:

Defines a line between carbon steel and stainless steel in a clad knife like the Hiromoto AS
Darkens carbon steel (hence the defined line described above)
Can darken carbon steel with a pattern when you use something like mustard and dab it on, or apply with cheesecloth or some such
Brings out the pattern in damascus steel....can be done with either stainless or carbon damascus

If you dunk a blade to acid etch it, it also dulls the edge, so it'll need to be resharpened.

Re: Acid etching my knives

Sat Jul 13, 2013 2:12 pm

I have the first knife I purchased from Mark that I use as my "experimental" knife. It is a Fujiwara FKH Carbon Gyuto 240mm and I have tried several patinas on it. The latest one (and the one I like the most) is an acid etch. I went to radio shack and bought the acid they sell for etching and applied it directly to the blade (no dilution).

I think it turned out really cool and when you polish the edge the effect of the shiny edge with the patina blade face is pretty cool.
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