PC 1000 is industrial grade polycarbonate. When using this material, it is about the intrinsic properties of the material and not the optical, transparent properties. The material is not crystal clear, but it is translucent.
The strength, impact resistance and transparency of PC 1000 make it an ideal material for certain transparent structural applications such as sight glasses and windows.
Machine grade PC 1000 polycarbonate is stress-free making it ideal for tight tolerance machined parts.