Crazing is a network of fine cracks under the surface of the material, also called hairline craze.
Different conditions and effects occur on different types of plastics.
In our experience we see it most commonly on materials such as ABS, Acrylic, Polycarbonate and Polystyrene.
Plastics are more susceptible to cracking and crazing when exposed to liquid chemicals and solvents.
This condition can occur months after processing.
To help prevent cracking and crazing, annealing works by reducing internal stresses and increasing the strengths of the joints and the system as a whole.