Cores and inserts are what shape your product and with Precision Ground, Inc. custom components in your mold, you'll be in good shape. All molding surfaces on every part will have a fine finish to minimize time and effort in polishing, even for a mirror finish. We manufacture rotating and unwinding cores for threaded applications and bubbler cores for thermal management. Our capabilities also include finishing tapped and multi-stepped holes, as well as complex flat orientations.