The tools of the blacksmith comprise hammers of various kinds, fullers, flatters, chisels, tongs, and the hardy. The simplest and one of the most useful tools is the sledge hammer which is employed for nearly all striking done on the anvil. The hand-hammer is used to bind the iron, while various other tools, such as the fuller, are used for shaping it. The fuller, of which there are two kinds - top and bottom fullers - is a half-round tool used to draw or force out the heated metal to form grooves, and so on. The top fuller has the appearance of a hammer, and is held on the work by a handle; the bottom fuller is shaped like the top one, but contains a stem which fits into the anvil. The flatter is a broad-faced hammer used to dress and smooth work after it has been drawn into shape by the use of hand-hammers and fullers. Two kinds of chisels are generally used - a blunt one for cutting cold iron and a finer edged one for cutting hot iron. They are usually made in the shape of hammers, one side being forged and flat with a cutting edge ground on it, and the other end shaped for striking purposes. Another cutting tool is the hardy, which fits on the anvil. It is a block of iron ground to a sharp or chisel edge. Various shaped anvil blocks and hand-hammers, which may be classed as special tools, are also used. Tongs for holding the iron are made in a wide variety of shapes and sizes.