Here's a pair of 8Pi's coming together. The exterior of the cabinets are made from solid variegated maple that started as 4/4 and 5/4 rough-sawn boards, and have been planed and run through a jointer, then glued-up into panels of the necessary size. Finished material thickness is a heavy 3/4". The mid-horns and interior cabinet pieces are made from the best 3/4" maple-veneered plywood we can source from regional vendors (plywoods aren't so great these days, but this particular one is better than most).