Cut mould does not seal evenly (warping)
Voids in mould (air entrapment)
Mould delaminates after curing
Mould soft and sticky in centre
Mould has pebbly surface.
Mould is sticky and scorched
Excessive shrinkage
Lack of flexibility
Casting problems
Wax pattern problems
Mould rubber problems
Mixing guide
De-wax and burnout cycles
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