
Cleaning Castable Resin Jewelry Pattern Sprues Before Investment
Support the pattern, remove the sprue in stages and keep rotary contact away from fine details. For this job, control cure state, sprue location, feature support and retained master dimensions. Stop if a prong vibrates, a flat spot appears or dust remains in recesses. Accept the work only when the witness is level with the approved contour and every protected detail remains present.
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