The document discusses different types of saws used in metal workshops, including the hacksaw, junior hacksaw, sheet saw, and piercing saw. Hacksaw blades come in various lengths and tooth configurations suitable for different materials from soft to thin. When using a hacksaw, it is important to securely hold the workpiece, firmly grip the saw with both hands, cut in a straight line, and avoid applying too much pressure on the blade. The junior hacksaw and sheet saw are suited for smaller pieces and large sheets, while the piercing saw is used for fine and decorative cuts.