The technique cutting metal with voltage and solution

[pickmonger]

There were posts here that talked about making picks with the pick metal being cut using a conductive solution and voltage

Does anyone remember the proper name for what I am referring to.

Search seems useless without the proper name.

[pickmonger]

I found one of the posts that uses the technique I was thinking of.

http://www.lockpicking101.com/viewtopic.php?t=35335

[Jacob Morgan]

The common term for removing metal with electricity would be EDM, electronic discharge machining. It uses a wire fed into the workpiece and it erodes the metal it touches. Everything is done in a liquid bath. It is used in tool and die shops. It is good for complex shapes. Years ago Home Workshop Machinist published do-it-yourself plans on how make a unit.

The post in the link above is not EDM--not sure what the proper name for it would be. Interesting and creative method, but not something that could not be done in minutes with spot annealing with a drill press (for the tension wrench shown). Might be good for intricate tools that could otherwise only be done with lots of file work.

[pickmonger]

Thank you for your information Jacob. I was able to do a useful search on google and get the information I needed.