Cooking Blade in Sprite (easy etching).

nozh2002

nozh2002

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I found rust on one of my favorite knife I start using in kitchen lately. I clean rust with dremel - it was not deep fortunately and decide to try etch it in Sprite(tm) as I did before after reading it on some Russian knife forum- once blade is cleaned already. I soap it a lot and clean with rubbing alcohol, run to the 7/11 for Sprite.

It is boring to wait over night so I tried to speed it up heating - usual way to make chemical reaction run faster. In result I get perfect speed - it is not as fast as in acid oe with electro etching, and not as slow as over night, it is like cooking speed. Just turn on the heat do not make it boil shake blade time to time and in ten minutes it will have deep gray color.

video - http://www.youtube.com/watch?v=fzZicf6Z5zc

Etching-Sprite-001.jpg


I did not wipe blade out right away, I let it dry and then apply carnauba, let it dry again and then rub. Here it is wit same blade on different knife.

Etching-Sprite-002.jpg


I am not sure how long it will stay and how good it will prevent steel from corrosion, but this cooking blade in Sprite was fun.

This is carbon steel (Krupp?) Progressive Tempered Lauri blades with 64HRC on the edge from www.brisa.fi and I made handles myself.

Thanks, Vassili.

P.S. I am pretty sure that this will not work on stainless blades.
 
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Hmm - I wonder if it's the lemon juice that creates that effect? That's what I've been using, but I haven't tried cooking - just rubbing it on with a cloth while I watch tv. Maybe cooking would speed it up . . . . . .
 
It's the phosphoric acid in the soda that does the trick , makes a nice gray color on Opinels.
HTH
Jorge
 
I have patinaed a few blades using Coke. Same effect, a deep gray. Good thing is that Coke does not seem to cause any harm to wood and plastic handles.

From what you describe, Coke seems to work faster. Without cooking, it only took me about 1/2 hour to get a good patina with Coke.
 
Hm, nice job. That looks like it should work pretty well at preventing any severe rust. Also, those handles are pretty nice.
 
Thanks, it is cocobolo on the etched one - screwdriver kind of handle and anatmical handle on the second one out of Lignum Vitae. Original picture, freshly made knife:

knife71-06.jpg


I just noticed how much darker it turns in 4 years...

We shall see about rust. I will continue to use it in the kitchen. This is pretty easy to rust blade - progressive tempered with 63HRC on the edge and 53HRC on the spine - pretty good deal for $15 (when I bought it euro was lower then dollar (2003-2004), now it is different ).

Thanks, Vassili.
 
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