Wedge (mechanics)
The origin of the wedge is unknown, because it has been in use as early as the Stone Age. Circa 3000 BC, in Ancient Egypt quarries, bronze wedges were used to break away blocks of rock used for construction. Wood wedges, that swelled after being wet, were also used. Some Native American tribes used antler wedges as a means of splitting and working wood to make canoes, houses, and other wood objects.