Finding the Right Surface Finish

Molded parts are everywhere — from highly cosmetic housings hiding in plain sight to internal components where a fine polish is unnecessary. Most people pay no attention to the surface finish on those parts, but for product designers and engineers, it’s an important design consideration.

Identifying the right surface finish is dependent on a few important elements, namely the development or production stage that your parts are in, the materials they’re being manufactured in and their end-use applications.

On custom finishes, use color coding to provide a clearly marked image of your CAD model with its required finishes.

This month’s tip discusses:

  • available surface finishes for injection molded parts at Proto Labs
  • how to create a custom surface finish involving two or more finishes
  • navigating finishes within ProtoQuote
  • why gating and ejection play a limited role in liquid silicone rubber parts
  • secondary options applied to magnesium components

Read the full design tip here.

Just Press Play for a Tour of Injection Molding

Our short video series continues with a look at the three different injection molding processes available at Proto Labs. See how we manufacture plastic, metal and liquid silicone rubber prototypes and low-volume production parts so fast.

Use CNC machining more? Take a spin through one of our high-speed mills. And if you’re curious as to how we’re able to turn your 3D CAD model into real parts in only a few days, check out our Art to Part video.