Nitrous on a 340 100 shot

I'll just use a thin cutting disc and slowly go around the perimeter till I'm through. Shouldn't get too hot doing that
Yep, As long as you're not really pushing that wheel through that metal, it should keep it cooler, I wonder if you're able to put a little water on it, ( like fer glass tile and stone) to preserve the Integrity, or is liquid going to make it worse? or am I Really over-analyzing something ?