THE SHORT LIST: 4 Ways to Leverage Rapid Overmolding

Rapid Overmolding is the latest addition to our injection molding service. Now, you have a fast way to create injection-molded parts with two different materials. We use a pick ‘n place method.

rapid overmolding services sample

That means we follow a two-step process. First we mold the substrate part. Then we place the substrate part into the mold and a second material is injected to form the final, two-material part.

Here are a few benefits of rapid overmolding.

Vibration dampening: Dampen vibration by adding liquid silicone rubber to parts made of hard plastic, like ABS, or if it’s a handhold device (think toothbrush), it can even be used to improve grip.

rapid overmolding services sample orange partMulti-color aesthetics: Add a stylistic flair to your product with overmolding. Using two materials, means two colors for high-quality looking products and can enhance your product’s design.

Fast, flexible volumes: Often, manufacturers will not process low-volume overmolding orders, but now you have the ability to manufacture 25 to 10,000+ overmolded parts within just a few weeks.

Simplify multi-part assemblies: Reduce cost and save time spent assembling parts by combining two materials in one molded part.

For information on rapid overmolding like designing mechanical interlocks or understanding chemical bonding compatibility, visit our rapid overmolding service page to see overmolding design guidelines and get free DFM feedback.

WEBINAR: Rapid Prototyping for Accelerated Medical Device Development

In our next webinar, we’re taking a look at medical device development. Specifically, how using rapid manufacturing can accelerate prototyping and get you to FDA submissions more quickly.

The presentation will cover:

  • Reaching validation and FDA  510K approval fast
  • Reducing costs with rapid manufacturing
  • Selecting materials for 3D printing, CNC machining and injection molding

And come prepared with questions! At the end we’ll have an open Q&A session.

TITLE: How Rapid Prototyping Accelerates Medical Device Development
DATE: Thursday, July 28 at 1 p.m. CDT
REGISTER: Click here to sign up

Already have plans that day? That’s okay. We’ll send you an on-demand version that can be watched at any time. Also, feel free to forward this invite to your colleagues.

On-Demand Webinar: Designing for Stereolithography

Last week we kicked off our webinar series on designing for 3D printing. The first session focused on stereolithography (SL) and it’s available on-demand here.

Key Takeaways

  • Properties of commonly used stereolithography materials
  • The unique benefits of stereolithography such as feature resolution and recommended applications
  • General design tips for overhangs, support structures, finishes and more

Top Questions

Can you describe the resolution of SL parts in terms of microns?
There are 25 microns per 0.001 in. Normal resolution builds in 100 micron layers, high-resolution builds in 50 micron layers and micro-resolution builds in 25 micron layers.

The minimum X/Y resolution would be 250 microns in normal resolution, 100 microns in high-resolution and 50 microns in micro-resolution.

What’s the cost difference between normal- and high-resolution SL parts?
There’s no set number since it depends on the part’s geometry. But for parts under 1 in., customers will see a relatively low cost difference between normal- and high-resolutions.

Height is a primary driver of cost so once you start approaching 2 to 3 in. build heights it can start to differentiate more dramatically. But, with our instant quoting process it’s easy to compare these costs simply by clicking back and forth and comparing resolutions.

What’s the rule of thumb for wall thickness in hollow structures?
We try to stay above 0.03 in. and a general rule is 0.01 in. wall thickness per inch of the part. For example, a part that’s 8 in., you’ll want to shoot for 0.08 in. wall thickness for a well-supported hollow part.

More 3D printing webinars on the way…
The next webinar on our calendar will be on accelerating medical device development with rapid prototyping, which you can sign up for here. And, in the coming months we’ll have more 3D printing webinars that will focus on designing for selective laser sintering as well as direct metal laser sintering.

WHITE PAPER: Data, Digital Threads and Industry 4.0

By now, you’ve probably come across the term Industry 4.0. And yes, it can seem like just another term in the buzzword dictionary, but many of the world’s leading technology and manufacturing companies — including yours truly — rely on it, every day. It’s how we take your 3D CAD model and turn it into a finished part faster than anyone else.

Download our free white paper to learn how companies are accelerating product development with software and analytics.

It’s important to note that Industry 4.0 isn’t only about 3D printing and new manufacturing processes. Rather, it’s about connecting automated front-end software with back-end hardware for more informed decision-making and efficient execution.

We refer to the link between each of the processes as the digital thread, which is made possible by software and technology.

Download the free white paper to learn how your business can tap into the power of the digital thread and join the next industrial revolution.

DOWNLOAD THE WHITE PAPER

THE SHORT LIST: 4 New Capabilities at Proto Labs

The crew at Protoworks (our R&D program) has been busy. Every day they’re pushing the boundaries to advance new rapid manufacturing processes and materials and expand your design possibilities.

We just rolled out a few new capabilities that we’re excited to share.

2 is better than 1: Overmolding

Overmolding expands on our injection molding offering. At Proto Labs, it’s a multi-step process where we mold a substrate part and place it into a second mold, which then molds another material onto the substrate. It’s called pick-n-place molding.

liquid silicone rubber manufacturing facility

A look inside our liquid silicone rubber manufacturing facility

Overmolding can aid in dampening vibration, improving grip as well as two-color aesthetics. We are still in the beta testing phase of our overmolding process, but it’s open to everyone.

Visit our overmolding page for design guidelines or to submit a request for parts.

Extra-strength machined parts: titanium

You asked. We listened. Our CNC machines can now mill and turn parts from titanium. With an excellent strength-to-weight ratio and corrosion resistance, titanium is most suitable for applications in aerospace, medical and other industries where high performance is critical.

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