Precision machinists use tool making techniques to produce close-tolerance parts, from single prototypes to production, for high-technology applications such as aircraft and space components, surgical equipment and electronic components. Highly skilled machinists utilize advanced technology to create parts crafted from almost every conceivable material...from plastic to aluminium, stainless steel, copper, titanium, as well as a wide range of exotic metals. Computer-controlled machine tools help ensure that each part is exactly the same as the previous parts.