It is best to use acrylic. Acrylic has a good shape, but the plate is hard and brittle, lacking toughness and convenient to process and transport. Acrylic is often called plexiglass. The light transmittance is 92%, the impact resistance is 16 times that of ordinary glass, and the self-weight is light, which is half as light as ordinary glass.

Plexiglass, that is, synthetic plastic, synthetic rubber and synthetic fiber, is also called plexiglass.