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Gold Star OmegaGold Star Omega has been formulated to deal with the most demanding situations, producing excellent results even at the most extreme temperatures. Omega has optimised thermal expansions, permeability and particle size distribution to enable it to produce the highest quality castings. Omega has the highest content of un-mineralised Cristobalite in the GSP range. A grade of Cristobalite is specifically manufactured for Omega at our sister company's calcining and grinding facility, which ensures that the exact particle size grading required is achieved. Omega is suitable for all Yellow and White Golds including High Percentage Palladium White Gold and can withstand a burn out temperature of 850°C. |
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| WATER TO POWDER RATIO |
Use de-ionised water Weigh water and powder Slurry temperature 21°C Leave for 90 min to stand before burnout | |
| 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.