Getting ready to head back north and take the wraps off the plasma table. Been thinking about ways to limit warping on 16-18 ga sheets with a lot of cuts. The THC does a great job of maintaining the distance during the cut but the warping is still a pain in the butt.

I've been thinking about using a small pump to flood the top of the plate with quench from the water table which should cool the plate down quite a bit and hopefully prevent a lot of the warping. I could hook the hose up to the floating head so it would follow the torch.

The question I have is the electrical part. With the water flow basically aimed towards the torch discharge, is there a danger of an electrical charge going back to the pump and its power supply or is the workpiece ground always the path of least resistance ??

As usual, any help appreciated.

Willy