Whether you are using a male or female mold, creating a Class 'A' finish on the mold surface is critical. Just as boats and other fiberglass structures can deteriorate over time, a porous mold surface permits water, chemicals, or other harmful agents to enter the structural laminate below. The condition of the mold surface affects three important areas of the molding process:

  • The quality of the mold's cosmetic finish will be reproduced in every part.
  • The mold surface affects the release characteristics of the mold.
  • The mold surface coat is the protective barrier to the rest of the mold.

For an in-depth description of the techniques necessary to achieve a Class 'A' mold surface finish as well as the steps required to maintain it, see the Plug Surface Preparation & Mold Surface Maintenance article in our Learning Center. Shop our complete selection of mold preparation products below!

  • Parting Wax

    Simple and Reliable Mold Release Wax
    4.8 star rating
    Parting wax is a non-silicone green wax specially formulated to produce a tough, durable, high-gloss surface. When...
  • PVA Release Film

    Easy Spray-On – Easy Release for Molds
    4.9 star rating
    PVA, or polyvinyl alcohol, should be used with our #1016 Partall Wax for the easy release of parts from a mold. Wax...
  • Step 1 and 2 Mold Polish

    Produce Lasting, High-Gloss Polished Surfaces
    These two compounds work together, and pack a one-two-punch for polish after parts have been sanded. Not only do...
  • Duratec® Gray Surfacing Primer

    Easy-Sand, Best Choice Primer for Plugs and Molds
    4.6 star rating
    Duratec® Gray Surfacing Primer is the best choice for coating your plug or reconditioning your mold. It is...
  • Meguiar's Machine Glaze

    For Dramatic Surface Shine and Conditioning
    The ultimate machine-applied shine. Meguiar's Machine Glaze lets you achieve a deep, rich gloss unmatched by any...
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  • Easy Clean Mold Release for Urethanes

    Easy to Apply, Easy to Clean Off
    Easy Clean Mold Release for Urethanes is a mold release designed specifically for releasing thermosetting urethane...
  • Non-Silicone High Temp Paste Wax

    Mold Release for High Working Temps
    This High Temp Paste Wax is specifically designed to release epoxy and polyester—for application temperatures...
  • FibRelease®

    For Effortless, One-Step Release of Parts
    5 star rating
    Save time, effort, materials, and money with FibRelease ® . With just one quick misting onto the mold su... 
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