When your component needs to be of exceptional visual appearance, have high resistance to solvent attack or have good dimensional stability … it will benefit from heat treatment.

As machining stresses are detrimental to the performance of a component, via the development of crazing in areas of localised stress. Annealing or normalising will be recommended for the benefit of your acrylic component, with the procedure being carried out in-house. Other plastics can also benefit from annealing and this will be advised where appropriate.