The B.B. bench is designed in way that the assembly of thewhole construction is possible without any kind of additional joints such asscrews or pins. Eachcomponent is a necessary element to build the structure.
To do the seat and shelf I chose plywood. With thecross grain plywood layout is very durable material. Another advantage of theplywood is its low price. By lowering the price of production lowers the finalprice, which is important if the potential recipient will be young people.

Seat and shelf are composed of a double board 12mm.
I decided on so thick items to emphasize the"hard" structure of the bench, firmly attached, durable and stable.
Red element guides the way of assemble.