Jerry - at long last, I remembered to measure the slats in the grate. The outside edges are slightly under an inch (I sure they're actually a full inch, but slightly worn at the edges), the crossbeams are 1/2" and the fore to aft slats are 1/8". If it were up to me, I might nest them together so that 1/8" material isn't part of the plan. Granted, the grate is 45-ish years old, but that is where my weak spots are. I updated the photos on Picasa with some additional details re some of the more complicated joinery - https://picasaweb.google.com/100988960116603858412/Teak#