Because of the First World War, Wegener's book went unnoticed outside Germany. In 1922, however, a third (revised) edition was translated into English, French, Russian, Spanish, and Swedish, pushing Wegener's theory of continental drift to the forefront of debate in the Earth sciences.
A drilling machine, called a drill press, is used to cut holes into or through metal, wood, or other materials (Figure 4-1). Drilling machines use a drilling tool that has cutting edges at its point.
Uses. Hand drills are used by do-it-yourself homeowners, hobbyists as well as professionals in the construction, remodeling, painting, manufacturing and furniture industries. They can also be used in conjunction with drill presses.