zap, my brother and I built a dining table for him with 2-2 1/8" thick w. pine last year. Came out nice. I call it his Fred Flintstone table. Pretty substantial looking, and we used a double row of biscuits to join 3 pieces to make it about 40" wide, after jointing the boards. The seams are almost invisble. Almost. We've thought of getting those tenon cutters too.