Polycraft Poly-Smash Simulated Breakable Glass is a two component, water clear polyurethane system that is specially formulated for the film/studio industry. This product simulates glass in all optical aspects but is very fragile and breaks into pieces, like glass, widely used for the simulation of glass shattering or breaking upon impact or explosions.
|Poly-Smash ||Unit |
|Mix Ratio By Weight / Volume ||100A : 200B |
|Pot Life @ 25°C ||12 - 15 mins |
|Cure Time @ 25°C (Depending on Thickness) ||8 - 12 hrs |
|Cure Time @ 50°C (Depending on Thickness) ||1 - 2 hrs |
|Recommended Cast Thickness ||2mm - 5mm |
|Shore D Hardness ||85 - 88 |
|Viscosity Mixed @ 25°C ||40 - 80 |
|Mechanical Strength ||Very Weak & Fragile |
|Recommendations ||Once Cured - Handle With Care |
Before use ensure that the master model from which the mould is made has the exact finish that is required in the cast or finished units, i.e.. for optimum clarity polish the master model to a very high sheen. Ensure that the mould is clean and dry. If the mould is made from metal or resin, use a release agent. Condensation cured silicone rubber should not be used with Poly-Smash. It may be necessary to preheat the mould to 40°C in order to prevent shrinkage at the corners and sides of the casting.
Open both A and B containers and examine for any signs of crystallization, place in the oven at 45 – 60°C if any crystals are observed. Ensure that both components are between 20 – 25°C before mixing. If using pigments, add the pigment to the part A.
Do not use paper cups or wooden mixing sticks as these may introduce moisture to the mix which may cause excess air in the cast or cure inhibition. Mix the two components at the correct ratio, mixing carefully to avoid air inclusion and making sure the material at the sides and bottom of the mix vessel is well stirred into the middle. The material may become cloudy in appearance for a few minutes. Pour the material into the mould, ideally onto the sides and in one place to reduce air bubbles
It is advisable either to use preheated moulds (see “Mould Preparation” above), Allow the casting to cure for at least 12-24 hours before polishing.