Gold Star Powders

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Brass Casting

Brass Casting

GOLD STAR LC BRASS

Gold Star LC Brass (LC stands for "low cost") is an exceptionally competitive, plaster-bonded investment powder, specifically formulated by optimising the particle-size distribution and thermal expansion to help casters compete in the most demanding of casting environments.

The casting of Brass for the costume jewellery market accounts for a large percentage of worldwide jewellery production, and is an area where costs must be minimised. Gold Star LC Brass helps achieve this but at the same time produces castings with excellent surfaces, therefore reducing metal loss and keeping finishing work, prior to plating, to an absolute minimum.

Gold Star Low Cost Brass can also, under strictly adhered to conditions, successfully cast silver, producing good quality castings with smooth surface finish.

The cost of Low Cost Brass is at least 25% lower than a competitive, conventional investment powder, although it is less abuse-resistant than other Gold Star products.

WATER TO POWDER RATIO Do not cast with a flask temperature lower than 580°C
Slurry temperature 21°C Leave for 90 min to stand before burnout
MACHINE VACUUM MIXING36:100
HAND MIX THEN VACUUM38:100

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Download PDF file Gold Star LC Brass
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Brass Casting
Brass Casting
MACHINE VACUUM MIXINGmin.
Weigh out water & powder0
Add powder to water
Mix under vacuum1
Stop mixer and scrape blades0.5
Mix under vacuum3.5
Pour flasks2
Vacuum flasks1
Total time taken8
HAND MIX THEN VACUUMmin.
Weigh out water & powder0
Add powder to water
Mix by hand1
Mix with machine3
Vacuum mixer bowl1
Pour flasks1
Vacuum flasks2
Total time taken8

Brass Casting Graph

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.