jmccustomknives
Thought I'd share.  This was my first attempt at a feather pattern.  I etched in Ferric Chloride and put it together.  I wasn't happy with the look so I thought I'd try a coffee etch.  Well, as you can see the difference is quite contrasting.  

So, the pro's:  The coffee etch has a lot of contrast and can look amazing.  It makes photography better due to the contrast.

The cons:  The coffee etch finish is delicate and rubs off pretty easy.  

I'd suggest a deep etch with FC before coffee to help hold the etch longer. 

feather fc.jpg  feather1.jpg

Rule #10;  "I can make that" translates to; "I'm to cheap to buy it new."

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RaymondRife
How do you think a coffee etch would go if you lowered the ph with some vinegar or some other acid?

It could give you better penetration and make it bit less delicate.

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jmccustomknives
RaymondRife wrote:
How do you think a coffee etch would go if you lowered the ph with some vinegar or some other acid?

It could give you better penetration and make it bit less delicate.



Not sure, might be worth a try.  

Rule #10;  "I can make that" translates to; "I'm to cheap to buy it new."

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Norseman C.B.
Looks good !!......................[cool]
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anvil
not my area of expertise, but  😉,, It seems an etch, no matter how slight shouldnt easily rub off because its an actual stock removal process.  perhaps it is more similar to temper colors, or a stain and just a surface change.

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jmccustomknives
anvil wrote:
not my area of expertise, but  😉,, It seems an etch, no matter how slight shouldnt easily rub off because its an actual stock removal process.  perhaps it is more similar to temper colors, or a stain and just a surface change.


I spoke with a friend whose been working with a full timer doing some feather patterns.  It appears that if one warms the blade up after coming out of the coffee (200f) the oxides Harden.  
I've got another blade that etched out for 2 days and the oxides didn't rub off.  I'm sure if I got after it with sandpaper it would.  I should note that the blade I left wasn't all that impressive, now it is.  lol.

Rule #10;  "I can make that" translates to; "I'm to cheap to buy it new."

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