water vapor plasma

Is anyone familar with the new plazcuts that are using water vapor instad of air? These units don't use high freg. and can weld&braze along with cutting. They even look like they might cut non-conductive materials. They also have a very long duty cycle, also no gas or air compressor. I saw one
advertised for $600 that would cut 1/8. Just add H2O. I don't want to buy untill I know more about them.
thanx.


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