Smart Putty (Each)

Smart Putty-Silly putty or bouncy putty has long been available as an amusement. This type of material is properly known as visco-elastic polymer or dilatent compound. This class of material has the remarkable property that it usually behaves as a soft mouldable plastic (like chewing gum), but instantly becomes a rubber if impacted i.e. it bounces like a ball. One of its uses in engineering is to assist in the machining of turbine blades! It is loaded with grit and injected under high pressure into the small bore cooling channels that are cast into the turbine blades for cooling. The unique rheological properties of the putty are ideally suited for the purpose of polishing the channel walls.