Etching a knife blade?

I am concerning etching a knife blade, by using nail polish (or something) to cover the part of the blade I do not want etched and raw  muriatic acid to etch with.  Anyone got any suggestions or recommendations.


Look into electro-etching, sometimes called electro-chemical etching. The process involves an electrolyte (like salt water), a nine volt battery, and the metal.

For a cheap method, you can use mustard to etch a blade as shown in this video and likely many other sources you can find on the internet

This may help.

WazIt (author)  mpilchfamily29 days ago

This looks do-able, and I will not be using more dangerous liquids. I think I will test it on some scrap material. Thanks

What kind of steel ?

WazIt (author)  steveastrouk1 month ago
I am going to use a sawmill blade, so I guess it is probably 15N20

Get More Out of Instructables

Already have an Account?


PDF Downloads
As a Pro member, you will gain access to download any Instructable in the PDF format. You also have the ability to customize your PDF download.

Upgrade to Pro today!