>>2412853fork of a tree for the base, a closed loop of cord around the ends of the forks, put stick between the loop and spin it around for energy, trigger is also a fork of a tree just short, engine stick and a another stick sideways on the bottom of the trap go in the trigger fork to block it till the trigger is stepped on. loop is hitched to the engine stick, one end ties to something solid and other end has a slipknot sitting over the trigger