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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.

What's the latest from 3D Systems? Innovations for different industries, processes

3D Systems unveiled several new solutions at the RAPID+TCT 2025 show in April designed to change the way industries innovate. From new 3D printers and materials for high-mix, low-volume applications to marked improvements in how investment casting can be done, learn what is the state of the art from the original inventors of 3D printing.
Read the full article.

Clever! Indexing plungers with chamfered pins

JW Winco has developed a new type of indexing plunger -- GN 824 -- that can independently latch into edges and grooves. This is made possible by a chamfered plunger pin. When the chamfered pin encounters a raised latching geometry, it retracts and then springs back out again once it reaches the latching point. This new indexing plunger can be ordered with axial thread for fastening and a black plastic knob for operating the indexing plunger. In a clever design, the plunger pin can be adjusted by 360 degrees to ensure that it encounters the mating surface perpendicularly. This hardware is well suited for transport frames, mechanisms, or covers that need to be locked in place quickly and securely, especially without the need for manual intervention.
Learn more.

Finnish-Dutch business partnership says nanodiamonds boost 3D-printed polymer performance, will offer enhanced filaments

Finnish nanodiamond manufacturer Carbodeon and Dutch 3D-printing specialist Tiamet 3D have announced the first nanodiamond-enhanced filaments for 3D printing.

The Carbodeon/Tiamet 3D filaments are based on a jointly patented technology that significantly improves the mechanical and thermal properties of 3D-printed items.

"By joining forces, we've already developed filaments with a 100 percent increase in tensile strength, improved printability, and better thermal properties," said Reid Larson, CEO of Tiamet 3D. "Printing also runs more quickly and more reliably with the addition of Carbodeon polymer-tailored nanodiamonds."

"Nanodiamonds offer the potential to make 3D-printed components that perform as well as or better than comparable injection molded components, but with massive cost reductions and production speed improvements, especially for prototype, on-demand, and short-run production," said Carbodeon CEO Dr. Vesa Myllymäki.

3D printing using improved-performance thermoplastics has potential in almost all manufacturing environments, but especially in electronics, automotive, and aerospace industries. As well as improving thermal management, conductivity, and tensile strength of the base polymer, nanodiamonds can increase the glass transition temperature of the end product or component to achieve more robust and reliable polymer products, suitable for more challenging environments.

But how does adding nanodiamonds help the final result? Myllymäki told Designfax exclusively, "The way selected nanodiamond addition affects the polymer is affecting both its thermal and mechanical properties. Regarding thermal, both thermal conductivity and glass transition temperature are affected, resulting in enhanced printing speed (three- to fivefold looks possible for the PLA filaments), printed item isotropic strength (better layer-to-layer adhesion), and higher temperature range for said item use." Regarding mechanical properties, Myllymäki said the nanodiamond particles act as a nucleus for crystallization (if distributed well in parent matrix) to enable tailoring of the polymer crystallinity (strength). While tailoring the polymer structure, their dispersion strengthens the composite structure and prevents the movement of dislocations.

Myllymäki told Designfax the nano-sized particles are spherical and applied at very low concentrations -- the concentration varies per application and targeted property, but it is always less than 0.5 wt. percent. The particles don't cause wearing of production tools. From a safety point of view, they are not cytotoxic nor immunotoxic (on the contrary, they are heavily investigated as a drug carrier within many pending biomedical applications). Carbodeon's U.S. agent Silicon Sense and Carbodeon have received EPA registration as the first nano-diamond actor in the United States.

Myllymäki said the detonation nanodiamonds Carbodeon manufactures are 4 to 6 nm spherical diamond particles, with covalently bound surface termination. It is this tailored surface that allows perfect electrostatic coupling of these diamond particles to the applied parent polymer. "Here, we can now select between carboxylated, amine-terminated, and hydrogen-terminated nanodiamonds. In addition to nanodiamond development and manufacturing, Carbodeon has made significant investments in developing nanodiamond material use within various polymer thermal compounds, metal finishing, polymer coatings, CVD seeding, and within 3D-printing filaments."

The first Carbodeon/Tiamet 3D filaments will be PLA (polylactic acid) based, with further development focused on higher-performance thermoplastics. The companies have signed a strategic partnership agreement on joint filament development, along with an agreement for Carbodeon to supply nanodiamond materials to Tiamet 3D.

The newly developed PLA filament product will be available both from Carbodeon and Tiamet 3D. Carbodeon filament products will be sold under the uDiamond^® brand.

Source: Carbodeon

Published April 2018

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