I've a gas stovetop and want to make portable a griddle- ?stainless, steel, cast, to lay on top of the burners when I want to make giant amounts of fried food. I thought I'd get approx 1/4 inch thick material and weld handles on the sides. Do not want a lip. Obviously my main concern is food safety. Also concerned about warping with heat applied and cracking. My stove came with a nice cast aluminum griddle but its too small- only covers 2 burners. Don't care if it's heavy.
Thanks for any thoughts.