Driving nails in high places and in nooks and crannies can be problematic. The swing space is limited there, and the direction of movement of the hand with a hammer is not the most convenient. It does often, that the head of the hammer misses the head of the nail, but next to it, often bending the nail. Good hit accuracy can be achieved by guiding the hammer sideways on the surface of a wooden strip stuck to the nail. The strip must also be set at the right angle to the nail shank.