Following to see how this turns out, as I saw the price difference also. I've also thought about designing my own, but I'm not sure that I can get the steel plate for that price, much less the clinker breaker setup. To say nothing of the time needed to cut the thing out and weld it together. Simond's is also 10" x 12" x 5" deep, as opposed to the 8" x 10" x 4" at Centaur.