3D Printing News Briefs, October 6, 2021: Business, Guns & Bridges – 3DPrint.com


We are starting with a small matter in today’s 3D printing briefs, as EPLUS 3D and Shining 3D have issued a joint statement. Optomec received an order from an OEM for five of its electronic 3D printers, and Hexcel was awarded a contract for 3D printed Boeing 777X parts. Next, a young man described as a far-right extremist was arrested in Australia for attempting to 3D print a gun. Finally, discover a concrete bridge created by researchers from the University of Ghent with 3D printing and topology optimization!

Joint statement of Shining 3D & EPLUS 3D

EPLUS 3D, founded in 2014, is the original developer and manufacturer of SHINING 3D’s industrial metal and plastic 3D printers, and its business covers professional 3D scanning, dental scanning and industrial 3D printing. But, the two companies recently made a joint statement in Hangzhou, China, that EPLUS 3D is now a stand-alone company and no longer a subsidiary of SHINING 3D. With this structural change, the two companies have taken steps to “facilitate a smooth transition”, such as EPLUS 3D opening a new production facility in Hangzhou, investing in marketing, sales, R&D and after-sales efforts. , establishing an independent global brand and providing industrial 3D printer solutions to customers around the world.

“For industrial industrial manufacturing machines (manufactured by Eplus3D) sold by SHINING3D, Eplus3D will conscientiously provide services to ensure the proper functioning of the machines on an equal footing, including, but not limited to, after-service. sales and technical support, “says the joint statement. .

Optomec receives an order for 5 Aerosol Jet electronic 3D printers

Examples of semiconductor packages showing 3D printed interconnects for 3D stacked array (LR), mmWave, and flexible circuit.

An OEM who is a long-time production customer of Optomec Inc. recently placed an order for five additional Aerosol Jet 3D printers for electronic production, bringing the total number over time for that particular company to 15 systems. The order, which cost more than $ 1 million, is part of the OEM’s production ramp plan, which is expected to reach more than 25 machines over the next year. One of the main applications of electronic printing is semiconductor packaging: manufacturing 3D interconnects to connect chips to traditional printed circuit boards, other chips, and even direct integration into end-use products such as portable devices. This is exactly why this particular customer, which manufactures electronic systems, has been using Optomec’s patented Aerosol Jet solutions since 2018, particularly for the advanced packaging of semiconductors in a proprietary mobile device end product.

“This latest multi-system 3D additive electronics order is further testimony to the viability of the production of Optomec’s solutions. We look forward to supporting this industry-leading user as they continue to grow their fleet of production systems, and also replicate this evidence-based statement with others in need of next-generation semiconductor packaging solutions. ”Said David Ramahi, CEO of Optomec.

Long-term contract awarded to Hexcel for Boeing 3D printing

Meanwhile, advanced composites company Hexcel Corporation has won a long-term contract for 3D printing parts for the Boeing 777X family. Hexcel will use its HexPEKK material, which combines carbon fiber and PEKK, to produce aerospace structures for jets at its own AM site in Connecticut. The HexPEKK parts that Hexcel will manufacture for Boeing, starting at the end of the year, include air duct applications and other supporting aircraft components. Commercial aerospace, defense and space applications require lightweight, complex parts with strong mechanical performance. HexPEKK is therefore an excellent choice, as it meets the requirements for smoke and toxicity inside airplanes. Additionally, in 2019, the company’s HexAM 3D printing process and HexPEKK end-use components were added to Boeing’s list of qualified suppliers.

“We are delighted that Boeing has chosen our additive manufacturing technology for these parts, and we appreciate their confidence in HexPEKK solutions for commercial aerospace applications,” said Colleen Pritchett, president of Hexcel – Aerospace, Americas & Fibers.

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Man arrested in NSW for allegedly attempting to 3D print gun

Continuing, Australia has long taken a hard line on 3D printed guns, with the New South Wales Parliament passing a law in 2015 banning the possession of files for even fake 3D printing guns. . Now NSW Counter Terrorism Police have arrested a 26-year-old man in the city of Orange for allegedly having digital plans to 3D print a gun. The investigation into the man began shortly after Australian Border Force officers found a package, allegedly containing a firearm component, bound for the House of Orange, and realized that the name and address matched their list of known right-wing extremists. After being charged with possessing a digital blueprint to make a gun, he now faces a maximum sentence of 14 years in prison.

“With the emergence of technologies, especially in 3D printing, authorities are proactively investigating online activity and monitoring the legal and illegal movement of firearms and firearm parts.” said NSWPF Counter Terrorism and Special Tactics Command Detective Superintendent Mick Sheehy.

“Police continue to uncover evidence of all types of illicit firearms, including homemade firearms, which are often crudely manufactured or assembled.

“These types of firearms add another layer of community safety risk as they are unstable and many are unable to maintain their integrity once fired. We will not hesitate to take action if we believe there is a possibility that a gun could land in the wrong hands. “

OptiBridge in 3D printed concrete optimized for topology

Finally, Ghent University and its integrated research institute Concre3DLab, which focuses on 3D printing of concrete structures, used 3D printing and topology optimization to create a 2 x concrete walkway. 5 meters called OptiBridge. The cooperation team based the bridge girders on a design optimized for 2D topology by Technion – Israel Institute of Technology, and built the bridge by joining four 3D printed hollow segments, which were printed in less than one hour and a half. The project, which aims to tackle complex AM problems from different angles, involved a lot of experimentation, and the design of the bridge is unique as mathematical design tools were used to design the shape, applying optimization of structural topology to a 2D beam. problem, the team was able to optimize the rigidity and develop the 3D shape of the bridge.

The bridge was originally intended to be printed in two parts, but the team encountered transportation limitations. The design was therefore subdivided into four bridge segments, which were printed in 40-minute sessions over two consecutive days, although this did not account for preparation and cleaning tasks. A mixture and printing system, with fast setting time and earlier strength, was developed that allowed overhang angles of up to 45 ° to be printed. Once the four segments were joined and aligned, the rebar and post-tensioning tendons were inserted and self-consolidating concrete was used to fill the internal void; then, the whole structure was prestressed. Finally, the bridge was returned to its final orientation. The next steps include a test program to analyze the bearing capacity and stiffness of the 3D printed bridge, and it will also be used to assess the durability of the 3D printed structures.

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