We built this feeder after we tried many other options. It is based on Rob's design. It holds exactly a bag of feed. Here it is-- Chicken eating-- Before we put the front board and the trough on-- Without a lid-- Trough-- Trough corner--(we put these pieces of wood on each side) This board went into the middle for support-- The only thing we are going to change is on the trough, the chickens flick a lot of fodd out so tonight we are going to put a thin board across the trough so it will eliminate this problem! Hope you enjoy!! It was pretty easy to build. The entire constuction of this was took about 2 nights. The board is 3/4 thick. Cody!!