Lay out the legs for the bench by placing a 365mm length for the floor. To each side of this screw the 268mm pieces in from the top down. From the 268mm side pieces, screw the 175mm length into place on top. Attach them by drilling clearance holes with a 6.5mm bit, then countersinking pilot holes with a 5mm bit. Apply glue to the joins. Use the 100mm bugle screws to secure.