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Before starting it is always advisable to heat the mould
and use it while warmed.
This removes dampness, which can cause the hot metal to splatter
and to allow a better flow of metal in the mould.
The temperature may vary depending on the mould and metal used
but I find that between 30 degrees and 40 degrees
Celsius best. You can easily set the temperature in most ovens.
Always apply dry talcum power (see illustration on right)
to BOTH parts of the moulds from edge to edge. This protects the
mould. More importantly this practice allows the air to escape during
casting.
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