It's made from two 12" X 24" sheets of 18 Gauge Expanded Steel, each bent into a "U" and positioned with one sheet stting right on top of the other, but turned 90 degrees to each other so that there are 4 sides and a double thickness bottom (takes longer to burn through). The sides are 6 inches tall and the bottom is 1 foot square - 1/2 cubic foot. The Sheet Steel baffles are each 6" X 8", to form a labyrinth within the basket. Welding thin metal stock like this requires turning down welder's power dial way down, and making quick welds - but it's easy and fun. Took me about 45 minutes and used about $25 of steel (since I only buy metal in very small quantity).