< EXTERNAL CORE ARMATURES
MOULD STRIPPING
Once the poured core for a plaster and grog investment system has set hard, the founder can remove the filled wax pattern from the surrounding mould rubbers and case. This is known as ‘stripping’ the mould.
It’s worth saying here that most of the ceramic shell investment systems used in art foundries do not need a solid core inserted to create a hollow cast. Waxes destined for use with this type of investment system can usually be stripped from the reproduction mould as soon as the slushed wax has solidified and hardened.
Stripping down a reproduction mould and removing the wax pattern can be a delicate task, especially if the contained design is fragile or especially intricate. A ‘clean’ removal of the wax pattern from the rubber skin and outer mould case depends greatly upon the care and skill of both the waxworker in carrying out the operation and the mouldmaker in their earlier construction of the reproduction mould.
However carefully formed in the reproduction mould, few waxes proceed to the investment stage without first undergoing some form of repair and retouching work.
WAX RETOUCHING >
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