Often there is a situation when you need to hammer a nail in a place where the hammer will not pull back, shelf, drawer, Cabinet. This sometimes resort to “detour” maneuver: – nail, he placed the metal rod and beat on it. Much more effective to use in such cases suitable size clamp. It is administered so that one of her sponge and grabbed the Board, you want to hammer a nail, and the second fell on his head. Now gently start to rotate the screw clamps on and he will press presses the nail into the Board.