abrasive

appliance

blaster

construction

device

diy

drone

electric

electrical

engine

equipment

factory

gear

grind

grinder

hand

hum

industry

insistent

machine

machinery

machines

manufacture

manufacturing

mechanical

mill

motor

panel

piercing

planer

plant

rotating

sander

scrape

scratch

scratching

screach

screeching

screetch

tool

turn

utensil

warehouse

whirl

whirling

whirr

whirring

work

workmen

works

pierce

rotate

screech

whir

workman