Millwrights are often described as masters of all trades as they are expected to install, maintain and repair all types of machinery in almost any industry. Millwrights install, repair, overhaul and maintain all types of machinery and heavy mechanical equipment. They work from plans and blueprints and install equipment and align parts or components. Millwrights also maintain and repair machinery as required. They learn how to use grinders and lathes so they can make their own parts if necessary. Maintenance includes cleaning and lubricating, or adjusting valves and seals. They must inspect and examine the equipment to find and investigate problems and breakdowns, although some millwrights specialize in installation of machinery only.