I'm looking at plans for a smoker and the plan calls for "bar grating" that's framed by angle steel. Anyone know where I could find this (or something heavier) for both the cooking grill and the coal grill? I've looked at the kind of industrial grating used as walk ways in factories, etc., but it seems difficult to get it cut to size. The coal grill can be placed higher for searing and grilling, as well. Best, Steve .