handtool

Hand tool refers to a tool operated primarily by hand rather than by an external power source. Hand tools are portable and used for tasks such as cutting, fastening, shaping, measuring, and marking in trades like carpentry, metalworking, masonry, and various crafts. They typically consist of a handle and a working head or blade, manufactured from materials such as steel, wood, or plastic.

Common categories include striking tools (hammers, mallets), fastening tools (screwdrivers, pliers, wrenches), cutting tools (saws, knives, shears), shaping tools (planes, files, rasps), and marking tools (tapes, rulers, levels, squares). Many tools are specialized for wood, metal, masonry, plumbing, or electronics.

History and use: basic hand tools have ancient origins and evolved with advances in metallurgy and manufacturing. Today they complement power tools, enabling precise work, field tasks, and situations where electricity or batteries are unavailable.

Design and maintenance: effective hand tools balance weight and reach; grip ergonomics and edge geometry influence efficiency and safety. Regular sharpening, cleaning, lubrication, and rust prevention extend life. Proper storage protects edges and teeth.

Safety and use: users should wear eye protection and use guards where appropriate. Secure workpieces, maintain firm control, and select the correct tool for the material and task to reduce injury risk.

Standards and selection: professional toolkits vary by trade, with emphasis on durability, tolerances, and ease of maintenance. Selection depends on task, material, access, and user comfort.