[HerbD]

In an earlier post I was looking for help on how fast to move the plasma torch when cutting 20 ga stainless steel sheet. After some searching on the web I found a chart. Unfortunately it doesn't go "thin" enough for my needs and I'll be doing some experimenting also.

So far the problem has been excessive slag on the backside of the cut. Too slow? Too hot? Too close, too far on tip to metal distance? Air pressure? Several variables to track. I've even read where you need gas on the back side to get really clean, no discoloring, in the cuts.

I was hoping that someone (Gadget?) that has a CNC cutting setup might share some Inches Per Minute (IPM) experience, and pictures, on this. I'm designing a low tech (I hope) linear cutter (Plasma Torch based) so that I can make straight cuts in fairly large sheets using some sort of mechanical weight and pulley device that can pull the torch at a constant speed along a light track. Looking at mechanical governors etc to control speed.

HerbD