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first step in trimming
trim the base of the maxillary model parallel to the established plane (pencil line)
second step in trimming
trim the posterior border of the maxillary model perpendicular to the marked midline
third step in trimming
trim the posterior border of the mandibular model until it is even with the posterior border of the maxillary model
fourth step in trimming
trim the base of the lower cast so that is is perpendicular to the backs of both casts and parallel to the base of the maxillary cast
fifth step in trimming
trim the lateral borders
sixth step in trimming
trim the anterior borders
seventh step in trimming
trim the posterior angles
eighth step in trimming
finish the cast by removing small nodules on the casts with a wax spatula