Proto Labs Garners Top Workplace Honor for 6th Straight Year

For the sixth consecutive year, Proto Labs has been recognized as a Top Workplace by Workplace Dynamics, a national survey firm that researches participating companies through confidential employee surveys.

The firm looks at individual factors such as employee wages and management, but also aspects that include career potential and a company’s future. The survey is conducted in 50 U.S. markets and local results are compiled by Minneapolis’ Star Tribune.

Welcome to the “Code Cave,” a new collaboration area inside renovated office space at Proto Labs’ Maple Plain, Minn. headquarters.

Our company is one of 110 Minnesota-based employers that scored high enough to qualify as a Top Workplace against Workplace Dynamics’ national benchmark.

On a related note, providing employees with a work environment that supports productivity and nurtures innovation is a key aspect of being a top workplace. Along these lines, the vacated production area on the lower floor of Proto Labs’ headquarters building in Maple Plain was recently renovated and converted into office space. That office area is now home to software engineers, web developers, and other technology-based roles. High-tech conference centers are sprinkled throughout and there’s even a “Code Cave” (see photo). Additionally, we’ve opened a new, larger 3D-printing facility in Cary, N.C.

Though the Workplace Dynamics survey covered only Minnesota employees, Proto Labs globally now includes 1,600 employees in 12 locations in eight countries.

TIPS WITH TONY: New Silicone Rubber Materials

We’ve expanded our selection of liquid silicone rubber (LSR) materials, which have some distinct elastic and optical advantages over certain thermoplastics. In addition to three durometers of general-use Elastosil LSR, and medical- and optical-grade Dow Corning materials, we now have two new durometers of Elastosil and a fuel-resistant flourosilicone material at Proto Labs.

Elastosil LSR
Elastosil LSR is a great general-use material that has good moldability characteristics, a good overall appearance and is transparent until colorant is added. Shore A durometers of 40 and 60 have been added our current offering of 30, 50, and 70 durometers.

Technical specs:

  • 40 durometer Elastosil has a tensile strength of 10.0 N/mm² with a tear strength of 33 N/mm and an elongation break of 610%.
  • 60 durometer Elastosil has a tensile strength of 9.40 N/mm² with a tear strength of 27 N/mm and an elongation break of 340%.

THE SHORT LIST: 4 Ways to Leverage Rapid Overmolding

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.

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.

Multicolor 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 service page to see 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.

DESIGN TIP: Cutting Corners on Injection-Molded Parts

Sharp corners definitely have their place in part design, but they often spell trouble when injection molding plastic parts. Accordingly, designers should be aware of the pitfalls associated with “being square” when developing parts. Indeed, part accuracy, strength, and aesthetics suffer without the right amount of corner rounding and filleting.

This month’s design tip explores ways to strengthen injection-molded parts while reducing costs with proper placement of corner radii and fillet. You’ll learn about:

  • Material selection. Some plastics are more forgiving of sharp-cornered parts. Choosing the right one for your application is a necessary step towards accurate, functional parts.
  • Wall thickness. Beefing up adjacent walls may absorb some of the stress associated with sharp internal corners, but can create other design challenges.
  • Part geometry. Some parts are simply more “moldable” than others. Achieving proper form, fit and function depends on sound part design, a large piece of which is appropriate corner radii.

READ FULL DESIGN TIP