grinder

industry

steel

equipment

tool

construction

sharpening

spark

work

metal

industrial

manufacturing

worker

machine

instrument

technology

factory

electric

manual

hand

jewelry

safety

workshop

circular

fine

iron

production

power

wheel

cut

grind

protection

disc

light

precise

man

manufacture

saw

disk

welding

flash

engineering

danger

rotate

blade

technical

machinery

labor

hot

painstaking