Low-volume Injection Molding From 3D Printed Molds

The majority of plastic products in the world today are manufactured by injection molding. However, fabricating molds can be prohibitively expensive and time-consuming. Fortunately, molds don’t always need to be machined out of metal—they can be 3D printed.

By directly 3D printing parts or using 3D printed molds for injection molding for prototyping and low-volume production, you can leverage the benefits of both technologies. This will make your manufacturing process more time- and cost-efficient and allow you to bring products to the
market faster.


The 3D printed molds white paper includes:

This white paper describes the production of small injection molded thermoplastic parts that were created with 3D printed molds produced on a Formlabs SLA 3D printer and injected using a Galomb Model-B100 Injection Molder.

Two mold designs were tested in Clear Resin: one of a large butterfly and one that produces four smaller butterflies in one shot. A third mold of a USB device enclosure was tested in High Temp Resin. These molds were 3D printed by Formlabs and the injection molded parts were produced by Galomb Inc and Formlabs in a variety of materials.

Content includes:

  • Abstract
  • Low-volume Production Parts from 3D Printed Molds
  • Method
  • Clear Resin Results
  • Further Testing with High Temp Resin
  • Addressing Common Problems
  • Design Guidelines
  • Process Summary
  • Conclusion

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