For a lot of people, nail biting is a manifestation of stress or psychological disorders. âBoth tend to cause teeth grinding, and your fingernails are a handy buffer.â Youâll have a hard time stopping without help from a psychiatrist or mental-health professional, he says.
The next type of sawing machine is the bone saw. The bone saw is a type of saw that is meant to cut through bones instead of wood. Most bone saws usually come with other accessories such as shears and snips. These types of saws are usually used in the medical industry, cooking industry or butchery industry.
You have to see this saw! Incredible 45,000-ton machine has blade the size of a four-storey building. These images show the enormous scale of the world's biggest saw - capable of mining more than 4,500 tons of coal per hour.