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Cold mould seal as a separating medium was equally popular among all (100%).
After application of another layer of separating medium, the entire working cast with the second part of the mold was boxed and type III stone was poured to completely cover the rest of the wax form and the outer surface of the second part of the mold.
An alternative to avoid sympathy cracking is to place an isolation joint with a separating medium (for example, fiberboards 1/2 to 1 in.