DIY electro-etching onto metal

[spinningmagnets]

9 minute video about etching numbers and logos onto metal tools. Fast forward to the 7 minute mark for the fun stuff. Very cheap and easy.

https://www.youtube.com/watch?v=zGtDz_rGgs8

 

[friendly1uk]

That's good that. Just a bit of salt water and 12vdc to get the ions moving in the right direction, if my physics isn't failing me. Quick oiling afterwards to stop rust forming and job done. I like the result.

 

[amberwolf]

Looks real easy to do...I think I might use the socket-etching idea, cuz I agree with him about the size of the markings they come with.