My husband made mine from a sheet of plywood, 4 ft by 8 ft, and I love it. The base is in 2 sections, held in place underneath with C clamps. 2 layers of shelves underneath, on very large casters. The top is all one solid piece, that lifts off, and has the well for my machine. The corners were rounded off and everything was sanded as smooth as glass and then stained and sealed. He even designed it so I have leg room underneath. It never jiggles when I sew and does not give when I am cutting fabric. He did not have a pattern, designed it himself.