Herculite Opticast is an easy to use off-white plaster. Designed for the optical engineering industry it is mainly used in the manufacture of prisms and lenses, for holding precision glass components during manufacture. It has a low expansion of just 0.05%. The relatively low set strength allows the components to be easily removed from the set plaster.
Plaster/Water Ratio: 100/44
Set Time (mins): 28
Supplied in a plastic drum with a shelf life of 12 months