Joining the legs to seat
Join the legs with three 2-1/2-in. deck screws and construction adhesive. Pre-drill all the screw holes with a countersink bit to avoid splitting the wood. Finally, set the sides up parallel to each other and glue and screw one on the front and one on the back of seat at pre-marked designations ( front 1-1/2in from front edge back 1 -1/2in from back edge)