Plasma cutters what do you have?
Don't be. Basically if you want to cut 1/4in you need to locate a machine tha will do 1/2 by hand. Its a loose of thumb, because of the controlled movement and speed, the power has to be there. Any plasma can go on a CNC machine, but high freq will screw with the PC. (unless you spend way too much time shielding it)
