Kind of a curious question more than anything. If you were able to sufficiently cool the metal you're trying to cut, would it reduce or eliminate melting? I'm guinea pigging myself right now, cutting brass, stainless steel, etc. and in testing settings, I notice that sometimes it gets a bulgy look near the edges, which I assume is caused by overheating/melting of the metal itself. I guess I could increase the speed, increase frequency, but beyond that, do you think cooling it would even be effective? I could rig up a port to blow cold air directly on the metal while it's cutting, but I'm not going through that hassle unless I'd get a net positive there.