In article ,
Laurie Forbes wrote:

Looks interesting but the web site is a little short on details.

http://www.multiplaz.com/

Typical information-free site for sure. Pretty, though.

The key is to use steam as the working fluid in what is essentially a
TIG torch. They claim steam or steam+alcohol to be almost as good as
argon, and a lot cheaper.

I was able to find the US patents, having gleaned the names of the
inventors from their awards:

6,156,994; 6,087,616; 5,719,370; and 5,609,777.


Joe Gwinn