blade
circle
circular
cut
diamond
die
discpulos
disk
drill
electric
engineering
equipment
factory
flash
grind
grinder
hand
industrial
industry
iron
light
machine crire
manual
manufacture
manufacturing
mechanic
metal
part
power
production
protection
rotate
round
safety
saw
spark
speed
steel
technical
technology
tool
treatment
turning
welding
wheel
work
worker
workshop