blade

circle

circular

construction

cut

die

disc

disk

electric

engineering

equipment

factory

flash

grind

grinder

hand

industrial

industry

iron

labor

labour

light

machine

manual

manufacture

manufacturing

mechanic

metal

part

power

production

protection

rotate

round

safety

saw

spark

speed

spin

steel

technical

technology

tool

treatment

turning

welding

wheel

work

worker

workshop