Electro etching stainless steel

[Technohedge]

Hi guys, I have etched a mark onto some N690 using my electro chemical etcher.

Noticed today that the black areas show a slight rusty colour. Will this get worse or have I done something wrong to cause this? Im new to this process.

 

[Stacy E. Apelt - Bladesmith]

It is the iron deposited in the recess by the AC making cycle. You can darken it with a Q-tip and FC, or use a sharpie. Rub off the excess on the flats and the mark should be darker. Another thing to try is oiling the mark with a good gun/knife oil.

 

[Technohedge]

Thanks Stacy!

 

[AVigil]

After etching the mark rinse it off with windex and water.

I actually place the blade in a baking soda bath and let sit for 20 minutes to neutralize the acid

 

[JTknives]

This is why thy make the neutralizer. Who did you get your etching chemicals from?

 

[Technohedge]

Etched using saltwater @ 15V

 

[JTknives]

Etched using saltwater @ 15V

that would be the bulk of your issues. I HIGHLY recommend talking to a company that makes etching chemicals. Buying the correct liquid will be the best thing you can do for your marks.