A Great Sawhorse These sawhorses are sturdy and they fold flat for easy storage. Building them is a snap: joint and plane 2×4 stock to 1 in.; then rip to 3 in.Crosscut at 30 in. for the legs and 18 in. for the stretchers. Use a biscuit joiner and double stack #20 biscuits at each joint.Assemble with a 1-1/2-in. continuous hinge and locking table leg braces.