White MLC Logo
Search
Close this search box.
Search
Close this search box.
Search
Close this search box.

The Overmolding Process – Preparing and Filling the Mold 7/8

We took on the challenge of over-molding a part handle with a 2-part epoxy material to make it easier to handle and more durable. Without specialized equipment our expert designed and printed a mold to see what we can learn about this process and what challenges to watch out for.

The basic steps to follow include:

    • Spray the mold thoroughly with mold release spray 
    • Prepare a surface for the molding process that can be cleaned or discarded to avoid damaging your work surface
    • Assemble, clamp, and/or seal the mold together around the part. Clamps, rubber bands and putty are useful but this can be accomplished in many ways
    • Mix the 2-part over-mold material. If possible, choose one that flows well and degass it in a vacuum chamber to remove as many bubbles as possible
    • Fill the mold until it is completely full up to all vent holes. Design the mold in a way that will make it easier to fill this than using only gravity, such as using a syringe or a large bowl to fill with material and allow the material to flow down slowly.
    • Allow the material to cure 
    • De-mold the part and cut off any material in the vent holes that are not needed for the final design.

Technical Support

Get help from our team by Calling us at 800-364-1652 x 4. You can also get assistance by clicking the Technical Support button or the Email Our Experts button below. 

More in this series

About the author

Want to learn more about 3DEXPERIENCE Solutions?

Scroll to Top