Platinum Casting

Platin Cast

The extreme melting point of Platinum of up to 2000°C requires a specially formulated Investment Powder to cope with the intense casting conditions. Platin Cast is a water-based Phosphate-bonded Investment Powder, which has been successfully used for the casting of Platinum alloy for many years.

Traditional Platinum casting investments use a 2-part acid-bonded chemical reaction to attain mould strength at an elevated temperature, whereas Platin Cast utilises a water-based, phosphate-bonded chemical system and sets in an exothermic reaction at room temperature.

The mixing process is similar to a plaster-bonded investment such as Omega, where the powder is added to the water in a mixing bowl, mixed for the correct length of time, vacuumed in the bowl and then poured into the flask, vacuuming once again.

After investing, the mould is allowed to bench-set for two hours, by which time it has set and the rubber base can be removed and the mould placed into the furnace.

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.