WHITE PAPER: Aluminum Tooling for Optical Moldable Silicone

Dow Corning recently published a comprehensive white paper on the use of aluminum tooling for moldable optical silicone. It examines two big questions:

  1. To achieve a high-quality finish on the molded parts, what type of optical-grade surface finish is required for the tooling used to mold the silicone optics?
  2. Can this be achieved with an aluminum injection mold or is tool steel required to provide parts with an optical finish?

Proto Labs’ aluminum tooling is a reliable indicator of future optical silicone moldability.

Read why integrating optical silicone into your development cycle with rapid injection molding is an effective strategy, and why aluminum tooling is a reliable indicator of future moldability.


Why use optical moldable silicone? It’s a relatively new material to the market, but it is quickly gaining popularity as a replacement for glass components in many optical and lighting applications. Its benefits include:

  • clarity
  • heat resistance
  • durability for use in outdoor and automotive applications
  • design flexibility for fine features
  • an ability to combine multiple parts into a single unit

Learn more about optical silicone with our “14 Reasons Why Optical LSR is Good for Lighting Applications” design tip.

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