the.com/grindstone
the only thing humans willingly press their nose against for centuries.
spinning stoneAncient sandstone wheels sharpened blades by sheer rotation
the phraseNose-to-grindstone dates back to the 1500s
wet workWater cooled the stone to prevent ruining steel
foot poweredTreadles let one person grind without an assistant
worn downThe stone sacrifices itself to make others sharp