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

Cutting, carving and smoothing aerated concrete  blocks, GRP, Green Oasis, plaster of Paris blocks, wood or MDF including mould-making.Cutting expanded polystyrene with a sharp tool or a hot wire and smoothing it.Using a chain saw on wood.

All plastics (polymers) degrade at sufficiently high temperatures, producing fumes with various hazards. Those materials presenting hazards at lower temperatures are discussed here.

Controlling the fumes from casting.