Ovens used for heating plastics to a pliable state.

The cutting of expanded polystyrene by means of a wire heated to about 300 °C.

The heating or bonding of materials to form shapes which can then be finished to provide a 3 dimensional representation of a CAD image.

This guidance is for choosing batteries for general practical circuit work, where pupils experiment with low-voltage circuits by connecting batteries , torch bulbs, buzzers, small motors and other low-power components to investigate electrical characteristics, parallel and series circuits, etc.