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Gold Star Gem SetGold Star Gem Set has been specially formulated to protect precious stones such as diamonds, when they are set into the wax patterns, burned out and cast, to ensure no damage to the stones during the burnout cycle. The maximum temperature achieved during the burnout cycle MUST not exceed 630°C. Gem Set holds the stones in place during the de-wax period, and protects them from the heat during the remainder of the burnout process, and the molten metal when cast. Gem Set will produce high definition, clean surface castings, with stones that remain as clear as they were before burnout. Extensive permeability testing and development has taken place to ensure maximum carbon is released from the mould during burnout. It is formulated with the special additives to enhance stone-in-place casting results and improve clean-off. Gem Set will cast all alloys melting below 1350°C. |
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- Waxes and Resins should be stored at the correct temperature as suggested by the supplier.
- After production, resin patterns should be cleaned and allowed to dry before being stored in an airtight container with a silicon absorption pad.
- The patterns should then be placed into a sealed container with a silicon gel bag.
- Patterns must not be taken out of the sealed container or excessively handled until ready for spruing.
| WATER TO POWDER RATIO |
DO NOT STEAM DE-WAX Do not burnout above 630°C Do not quench, only knock out when cold | |
| MACHINE VACUUM MIXING | 38:100 | |
| HAND MIX THEN VACUUM | 40:100 | |
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Do not remove flasks from furnace to cast until they have been held at casting temperature for a minimum of 1 hour. If held for less than 1 hour, the core of the flasks will be at a much higher temperature than the digital temperature display states, and may result in metal mould reaction.