They fit bearings, align gears and wheels, attach motors, and connect belts. Making sure parts are level and aligned properly is important. Millwrights must have good mathematical skills so that they can measure angles, material thickness, and small distances with tools such as squares, calipers, and micrometers. When a high level of precision is required, devices such as lasers may be used. They also use hand and power tools, cutting torches, welding machines, and soldering guns.
Some millwrights use metalworking equipment such as lathes or grinders to custom fit parts.
There has been an increase in automation in most industries. This means that there are more sophisticated machines for millwrights to install and maintain. This machinery often needs special care and knowledge. Therefore, millwrights often work closely with computer or electronic experts, electricians, engineers, and manufacturersrepresentatives to install it. As well as installing and taking apart machinery, many millwrights repair and maintain equipment.