Okay, so for all of you out there that thought, "mmmmm, cat," shame on you. They're not that tasty. ;)
I think this guy is the inventor: THE CAT FOOD CAN ALCOHOL STOVE I read his instructions, but then read and followed these to make my stove: SGT Rock's Hiking H.Q. - Cat Stove.
The instructions were easy to follow, and an evening's work resulted in a new cat stove that fits nicely into my backpacking cook pot. My stove weighs 68.5 grams, which is about 2.4 ounces. I could potentially reduce that by trimming the hardware cloth, since its squares are 1/2 inch on a side, and probably 1 inch on a side would do the trick.