Rubber Glass
Rubber Glass is a silicone rubber developed specifically
for special effects and display applications. It cures
overnight to a solid, clear rubber that can then be easily
broken or "crumbled" into pieces that look exactly like
broken glass, ice or diamonds. Vibrant colors are possible
by adding liquid color pigments.
Smash! Plastic
Smash! Plastic is a urethane plastic designed to shatter/crumble
on impact. Once cured it shatters like glass and can be cast
solid in thin sections to make window panes or rotationally cast
to form hollow bottles, jars or other glass-like objects for
breakable props.