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Username Post: Etching Cable Damascus        (Topic#863329)
puncypanda
Journeyman KnifeNut!
*
10-25-09 19:28.58 - Post#1966250    



Hi
Has anyone tried etching cable damascus with acid?
I can't seen to be able to get out the pattern. I am aware that there is only one type of steel in the weld unlike normal damascus so there won't be any color difference but I still can't manage to get the basic pattern out. If anyone has the $50 Knife Shop by Wayne Goddard it would be great if you could look for me as I think there is a section on cable damascus.
Thanks

Jim
 
antonio_luiz
Master Member KnifeNut!
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10-25-09 19:46.59 - Post#1966256    


    In response to puncypanda

Do not etch with acid. Most acids will clean the steel rather than bring out the pattern. Phosphoric acid will leave a patina. You also run risk of eating away the whole knife.

The standard chemical for etching damascus blades is Ferric Chloride. It's also used for etching circuit boards so if you have trouble locating it try DSE or Leading Edge
I'm paranoid only cause everyone's out to get me!


 
puncypanda
Journeyman KnifeNut!
*
10-25-09 20:42.27 - Post#1966272    


    In response to antonio_luiz

Ahhh ok.
I think I was etching with ferric chloride but I'm not sure. Chemistry never was my strong point at school but I got told to get Hydrochloric acid and put loads of steel wool in it until the bubbling reaction stops. I think that creates ferric chloride doesn't it? Anyway I tried it but it didn't seem to work.
I'll give DSE a go or maybe I'll just try vinegar and coke.
Thanks
 
antonio_luiz
Master Member KnifeNut!
*
10-25-09 21:09.24 - Post#1966276    


    In response to puncypanda

What concentration of hydrochloric acid did you use? Yes, steel wool will convert it to ferric chloride but it may not have been concentrated enough to etch the blade.

Was it stainless cable? That can be difficult to bring out a pattern regardless.
I'm paranoid only cause everyone's out to get me!


 
puncypanda
Journeyman KnifeNut!
*
10-25-09 22:41.41 - Post#1966289    


    In response to antonio_luiz

Yes I'm pretty sure that it is stainless.
I will go to DSE tomorrow and try some proper ferric chloride.
One other idea I had was to try and darken the blade as a whole so that the weld might show a different color. Do you have any idea how to darken the color of steel. I'm thinking sorta like blueing but to a really dark grey?
Thanks again.
 
SirSpice
Master Member KnifeNut!
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10-26-09 01:03.13 - Post#1966326    


    In response to puncypanda

Dave from Japaneseknifesharpening.com has put up a great DIY article on how to re-etch a blade:

http://www.knifeforums.com/forums/s...
Shachar


 
antonio_luiz
Master Member KnifeNut!
*
10-26-09 03:23.15 - Post#1966413    


    In response to puncypanda

  • puncypanda Said:
Yes I'm pretty sure that it is stainless.
I will go to DSE tomorrow and try some proper ferric chloride.
One other idea I had was to try and darken the blade as a whole so that the weld might show a different color. Do you have any idea how to darken the color of steel. I'm thinking sorta like blueing but to a really dark grey?
Thanks again.



Phosphoric acid will give a light grey patina to carbon steel - not sure if it'll work on stainless.
I'm paranoid only cause everyone's out to get me!


 
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