here is what makes a third hand for me in breaking down plywood, made from scrounged parts that are readily available and used some yankee ingenuity and ideas seen elsewhere in others shops or magazines.
sets up quick with the use of my scrap barrel.
dismantles easily and realigns with notches for the next round.
the main support arm slides out of the way into my fence tubes tot he screw stop so it doesnt get lost inside
and support given threw this allows a one man crosscut in plywood to be much safer than without it.