The _dove-tail saw_ is similar to the tenon saw, but smaller, and with a brass back instead of an iron one. It is used for dove-tailing, or cutting notches in a board or beam, into which projections in another board or beam are fitted, in order that the two may be held together, as we see the sides of a box are fitted to the back and front. Then there is the _compass saw_, for circular work, and the _keyhole_, or _narrow saw_, for cutting out holes. The planes are used for bringing the edges and sides of beams, boards, or other wooden fitting, to a perfectly smooth surface: the first of these, used upon the rough wood, is called the _jack plane_; another is called the _trying_ or _trueing plane_; and a third, the _smoothing plane_. [Illustration: Trying Plane. Smoothing Plane. 2-foot Rule. Glue Pot.] The plane, as you will see, is a solid piece of hard smooth wood, with a hole in the centre containing the cutting tool, or, as it is called, the plane iron, which is firmly fixed with a wedge, so that its sharp cutting edge only slightly projects at the bottom. The wood which is to be smoothed is fixed on the joiner’s bench by means of a screwed board, called a shooting board, and, by means of the handle at the top, the plane is made to slide swiftly along its surface, so that the edge of the tool cuts off a thin shaving. There are various sorts of planes besides these, used for cutting various parts of the work, but they are most of them of similar construction. Chisels are either for paring the wood, and are used with the hand; or are intended to cut into the thickness of the wood, and are then struck with a large wooden hammer, called the _mallet_. The _gouge_ is a curved chisel, used for cutting mouldings or making round edges. [Illustration: Clout Nail. Cut Clasp Nail. Brad. Spike Nail. Bradawl. Chisel. Gimlet.] The boring tools are the bradawl, the gimlet, and the stock and bit. The _bradawl_ is a small sharp wire fixed in a handle, and used for making holes to receive large nails, which, if driven in at once by the _hammer_, would split the wood. Nails are of various kinds, the difference in which may be seen in the engraving. The best kinds of nails are made from thin bar iron, pointed, cut off to the proper length, and the head formed by stamping. The _gimlet_ is a hollow blade with a screw at the end, and fixed to a cross handle. It is used for boring a larger and rougher hole than the bradawl, for receiving _screws_, which are screwed into their place by the _screw driver_, a sort of chisel, the edge or point of which enters the notch in the head of the screw, so that the workman may turn it round. The _bit_ is a tool not unlike a large bradawl, which fits into a stock or handle. The bits are of various sizes, and are used for boring large holes. [Illustration: Centre Bit.]