A Refurbishing To-Do List

The following steps represent a major refurbishment that will increase tooling life and reduce the cost of manufacturing and secondary operations in molding facilities.

The following steps represent a major refurbishment that will increase tooling life and reduce the cost of manufacturing and secondary operations in molding facilities.

  1. Sample the tool prior to starting any work to review parts for flash or areas where the part may stick or need additional polishing; every function of the actions or components, part ejection, electrical, hydraulic, hot manifold and cooling systems.
  2. Make sure all safety systems, guards and limit switches are in good working order.
  3. Master the cover parting line by flat stoning and deburring the cavity, which has been compressed from years of running the mold.
  4. Completely disassemble the entire mold to review all fit and function of 2-D and 3-D components/actions and all systems. It is not uncommon for the initial part designs to require changes in order to create a long-lasting tooling condition.
  5. Replace, rebuild or repair components /actions and refit all back into the mold and check timing and function.
  6. Drill out every water/coolant line to get maximum thermal transfer of cooling lines for the fastest cycles. Add water as needed to maximize cooling if the current system is inefficient.
  7. Review gating to see if some form of automatic part de-gating can be added to reduce secondary operations.
  8. Completely reassemble the mold ensuring all moving components and actions function correctly; address any benching or polishing issues.
  9. Spot the entire mold. Weld as needed to repair any flashing and once completed, bench all welded areas and open up all vents.
  10. Sample the tool to review all corrections and functions of the mold; make further adjustments as needed.

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Mold Refurbishing - Out With the Old and in With the New!

While sending a mold out for repair may cost some time and money up front, in the long run, the shop will benefit from a mold that's "just like new" at a fraction of the cost of a new mold.