Created after the orginal thought of the drill
, the jackhammer takes speed and power in order to work. Start by creating a fist. Then, get into a stance that will allow maximum power and speed. Arch your back forward and thrust your fist through your other hand, in some what of a punching motion. Try to build up speed. That is the secret of the Jackhammer. Kids, don't try this with grandma in the room.