機器
ancient
background
blade
bolt
circle
closeup
company
concept
craft
cut
device
dying
equipment
fabrication
factory
form
friction
glove
grind
grinder
grinding
grindstone
hand
hands
heavy
hone
human
industrial
industry
iron
jobs
knife
machinery
manhands
manufacture
metal
people
power
process
sharpen
sharpening
sparks
steel
table
tool
tradition
traditional
wheel
work