Sides

Glued the sides on and used stainless steel screws and put them  every 4 inches. I used a drill bit to counter sink them so that when I put my trim on it wont  have bumps. I clamped the sides on an predrilled 4 holes and put the screws in then removed the sides and glued and then put the sides back up and finished pre drilling all the other holes and counter sunk each.