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A6 - Crucible

£40.40
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This is a high quality professional ceramic bonded clay graphite crucible as used in industry. Suitable for all metals inluding precious metals. Ideal for jewellers/silversmith's

A new crucible should initially be heated slowly and evenly to 600ºC on low power, avoiding local impingement of flame. Subsequently the full heat input rate should be utilised to achieve a uniform bright red condition over the whole crucible (circa 900ºC / 1650ºF) at which point the crucible should be charged immediately taking care to avoid packing metal tightly or bridging ingots across the crucible. The furnace controls can then be set to achieve the desired metal operating temperature and heating should continue at the full rate until the metal has reached the desired temperature.

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