A Tool and Die Maker assesses specifications, lays out metal stock, prepares and operates machine tools, and fits and assembles parts to fabricate and repair metalworking dies, cutting tools, jigs and fixtures, gauges, and machinists' hand tools, applying knowledge of tool and die design and construction, shop mathematics, metal properties, and layout, machining, and assembly procedures; Studies specifications, such as blueprints, sketches, models, or descriptions, and visualizes product to determine materials required.