Eli5 Why does a cast saw not cut your skin?
In: 21
Cast saws are made to only vibrate back and forth a short distance, and to have relatively dull teeth. The cast material is hard but brittle meaning a short movement by the saw teeth will cause that part to shatter, allowing the saw to gradually cut through. Our flesh however acts more like a bag of water and when the saw moves a short distance against it the flesh can just compress and move out of the way without being damaged.
Latest Answers