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

This guide explains how to use three of the common composite casting materials, used in schools. 

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

The solvents are usually highly flammable (hydrocarbons, esters or ketones) but are sometimes non-flammable chlorinated hydrocarbons. This risk assessment also covers paint strippers that use similar solvents.