what size cabinet can i build from a single sheet of plywood
Most cabinets are less than 36 inches high and 24 inches wide. If you rip a 4-by-8 foot sheet of plywood in half parallel with the grain, and then crosscut those pieces at 35 1/4-inches, you will have two pairs of cabinet jambs, or enough material to make a single island cabinet measuring 24 by 36 inches.