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Engineer's Toolbox: How to design the optimum hinge

Although many pin styles are available, Coiled Spring Pins are particularly well suited for use in both friction- and free-fit hinges. To achieve optimum long-term hinge performance, designers should observe these helpful design guidelines from SPIROL.
Read the full article.

Innovative new robo welding gun

Comau's newest N-WG welding gun is designed for high-speed spot welding for traditional, hybrid, and electric vehicles, in addition to general industry sectors. It features a patented, single-body architecture that enables rapid reconfiguration between welding types and forces, and it delivers consistent performance across a broad range of applications, including steel and (soon) aluminum welding. It supports both X and C standard gun configurations, has fast arm exchange, and universal mounting options. It is fully compatible with major robot brands and represents a significant advancement in spot welding performance and cost efficiency.
Learn more.

What's a SLIC Pin^®? Pin and cotter all in one!

The SLIC Pin (Self-Locking Implanted Cotter Pin) from Pivot Point is a pin and cotter all in one. This one-piece locking clevis pin is cost saving, fast, and secure. It functions as a quick locking pin wherever you need a fast-lock function. It features a spring-loaded plunger that functions as an easy insertion ramp. This revolutionary fastening pin is very popular and used successfully in a wide range of applications.
Learn more.

Engineering challenge: Which 3D-printed parts will fade?

How does prolonged exposure to intense UV light impact 3D-printed plastics? Will they fade? This is what Xometry's Director of Application Engineering, Greg Paulsen, set to find out. In this video, Paulsen performs comprehensive tests on samples manufactured using various additive processes, including FDM, SLS, SLA, PolyJet, DLS, and LSPc, to determine their UV resistance. Very informative. Some results may surprise you.
View the video.

Copper filament for 3D printing

Virtual Foundry, the company that brought us 3D-printable lunar regolith simulant, says its popular Copper Filamet™ (not a typo) is "back in stock and ready for your next project." This material is compatible with any open-architecture FDM/FFF 3D printer. After sintering, final parts are 100% pure copper. Also available as pellets. The company says this is one of the easiest materials to print and sinter. New Porcelain Filamet™ available too.
Learn more and get all the specs.

Copper foam -- so many advantages

Copper foam from Goodfellow combines the outstanding thermal conductivity of copper with the structural benefits of a metal foam. These features are of particular interest to design engineers working in the fields of medical products and devices, defense systems and manned flight, power generation, and the manufacture of semiconductor devices. This product has a true skeletal structure with no voids, inclusions, or entrapments. A perennial favorite of Designfax readers.
Learn more.

Full-color 3D-printing Design Guide from Xometry

With Xometry's PolyJet 3D-printing service, you can order full-color 3D prints easily. Their no-cost design guide will help you learn about different aspects of 3D printing colorful parts, how to create and add color to your models, and best practices to keep in mind when printing in full color. Learn how to take full advantage of the 600,000 unique colors available in this flexible additive process.
Get the Xometry guide.

Tech Tip: How to create high-quality STL files for 3D prints

Have you ever 3D printed a part that had flat spots or faceted surfaces where smooth curves were supposed to be? You are not alone, and it's not your 3D printer's fault. According to Markforged, the culprit is likely a lack of resolution in the STL file used to create the part.
Read this detailed and informative Markforged blog.

Test your knowledge: High-temp adhesives

Put your knowledge to the test by trying to answer these key questions on how to choose the right high-temperature-resistant adhesive. The technical experts from Master Bond cover critical information necessary for the selection process, including questions on glass transition temperature and service temperature range. Some of the answers may surprise even the savviest of engineers.
Take the quiz.

Engineer's Toolbox: How to pin a shaft and hub assembly properly

One of the primary benefits of using a coiled spring pin to affix a hub or gear to a shaft is the coiled pin's ability to prevent hole damage. Another is the coiled pin absorbs wider hole tolerances than any other press-fit pin. This translates to lower total manufacturing costs of the assembly. However, there are a few design guidelines that must be adhered to in order to achieve the maximum strength of the pinned system and prevent damage to the assembly.
Read this very informative SPIROL article.

What's new in Creo Parametric 11.0?

Creo Parametric 11.0 is packed with productivity-enhancing updates, and sometimes the smallest changes make the biggest impact in your daily workflows. Mark Potrzebowski, Technical Training Engineer, Rand 3D, runs through the newest functionality -- from improved surface modeling tools to smarter file management and model tree navigation. Videos provide extra instruction.
Read the full article.

What's so special about wave springs?

Don't settle for ordinary springs. Opt for Rotor Clip wave springs. A wave spring is a type of flat wire compression spring characterized by its unique waveform-like structure. Unlike traditional coil springs, wave springs offer an innovative solution to complex engineering challenges, producing forces from bending, not torsion. Their standout feature lies in their ability to compress and expand efficiently while occupying up to 50% less axial space than traditional compression springs. Experience the difference Rotor Clip wave springs can make in your applications today!
View the video.

New Standard Parts Handbook from JW Winco

JW Winco's printed Standard Parts Handbook is a comprehensive 2,184-page reference that supports designers and engineers with the largest selection of standard parts categorized into three main groups: operating, clamping, and machine parts. More than 75,000 standard parts can be found in this valuable resource, including toggle clamps, shaft collars, concealed multiple-joint hinges, and hygienically designed components.
Get your Standard Parts Handbook today.

Looking to save space in your designs?

Watch Smalley's quick explainer video to see how engineer Frank improved his product designs by switching from traditional coil springs to compact, efficient wave springs. Tasked with making his products smaller while keeping costs down, Frank found wave springs were the perfect solution.
View the video.

Top die casting design tips

You can improve the design and cost of your die cast parts with these top tips from Xometry's Joel Schadegg. Topics include: Fillets and Radii, Wall Thicknesses, Ribs and Metal Savers, Holes and Windows, Parting Lines, and more. Follow these recommendations so you have the highest chance of success with your project.
Read the full Xometry article.

Just say no to labels: New Xerox Direct to Object Inkjet Printer prints on objects in minutes

The new Xerox Direct to Object Inkjet Printer makes it possible for retailers and package printers to print durable, vivid color images, photos, and text directly on 3D objects in just seconds. The printer leverages Xerox image-quality algorithms that direct tiny stainless steel nozzles -- half the width of human hair -- to accurately spray ink on objects as small as bottle caps and as large as football helmets.

The nozzles are contained in print heads that are about the size of a deck of cards. The printer can print on plastic, metals, ceramics, and glass, eliminating the need for costly labels.

"This innovation opens up a path for creating customized products instantly at a time when the consumer's appetite is all about personalization," says Brendan Casey, vice president of Xerox Engineering Services. "Imagine a sports fan coming home from a game with a helmet or ball that was personalized right at the stadium, or a retailer offering on-demand personalization on hundreds of different store items."

By accurately spraying ink at distances of 1/4 in., the printer is able to print on smooth, rough, slightly curved, or stepped surfaces at print resolutions ranging from 300 to 1,200 dpi. The printer can handle up to 30 objects per hour, with the ability to scale for production.

"The real innovation here is that we can now print on items, such as steel water bottles with multiple curves, without the set-up time and costs that analog printing such as flexography or screen printing require," says Wayne Buchar, chief engineer, Xerox Engineering Services. Other innovative features include:

• The ink jets are compatible with virtually any type of ink chemistry, including solvent, aqueous, and UV inks and can be operated at temperatures as high as 140 C, enabling jetting of specialized inks that meet demanding requirements.
• The innovative architecture features a flexible design for holders so that objects can be changed out easily.
• Xerox software ensures precise head-to-head registration and best-in-class color calibration.

The new printer aims to create new revenue opportunities for a number of industries:

• Retail: In competitive retail space where brick-and-mortar stores are in a fierce battle with online retailers, the printer is easy to use, fun to watch, and offers highly customizable output allowing stores to offer walk-up, low-cost print runs as small as a single object on a variety of things.
• Printing: For those serving a variety of markets, centralized print providers or distributors (online or brick and mortar) can offer small runs for personalizing and customizing products.
• Packaging and manufacturing: It is a packager's dream to eliminate the cost and headache of labels and be able to customize packaging. It also offers a flexible architecture that can support conveyors if necessary.

Xerox says its Direct to Object Printer is a customized solution built to order. Xerox will work directly with customers to optimize a custom configuration specifically suited for their application. Pricing starts at $145,000 and varies according to configuration and options.

Source: Xerox

Published September 2016

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