A toolmaker is a skilled worker who produces and maintains precision tools used in the production of metal, plastic and other materials of all shapes and sizes. The work of a toolmaker involves interpreting drawings and technical data to machine and assemble with great accuracy jigs, fixtures, moulding tools, dies and punches. Care and attention to detail and high precision are the hallmark of toolmaking. The use of lathe, milling machine, surface grinders, drilling and spark erosion equipment are the key skills as are the use of precision, marking out and measuring tools. Modern technologies such as wire erosion, computer aided design (CAD) Computer aided manufacture (CAM) and computer numeral control (CNC) machining have become an integral part of the work of the toolmaker.