Oak Ridge tool takes world record for largest 3D-printed object

Michael Irving for New Atlas:  Oak Ridge National Laboratory (ORNL) is no stranger to impressive 3D printing feats, with a replica 1965 Shelby Cobra and a dwelling and vehicle which can power each other, already under its belt. Now a new plane wing trim-and-drill tool developed and 3D printed by ORNL has been certified by Guinness World Records as the largest solid 3D printed item. Made from carbon fiber and ABS thermoplastic composite materials, the new tool measures 17.5 x 5.5 x 1.5 ft (5.3 x 1.7 x 0.5 m) and weighs around 1,650 lb (748 kg). To meet the requirements of the record, the item needed to be one solid piece of 10.6 cubic ft (0.3 cubic m), which a Guinness World Records judge confirmed at a ceremony.   Cont'd...

Going Beyond 3D Printing to Add a New Dimension for Additive Manufacturing

Lawrence Livermore National Laboratory:  A team of Lawrence Livermore National Laboratory researchers has demonstrated the 3D printing of shape-shifting structures that can fold or unfold to reshape themselves when exposed to heat or electricity. The micro-architected structures were fabricated from a conductive, environmentally responsive polymer ink developed at the Lab. In an article published recently by the journal Scientific Reports (link is external), lab scientists and engineers revealed a strategy for creating boxes, spirals and spheres from shape memory polymers (SMPs), bio-based "smart" materials that exhibit shape-changes when resistively heated or when exposed to the appropriate temperature. Lab researcher Jennifer Rodriguez examines a 3D printed box that was "programmed" to fold and unfold when heated While the approach of using responsive materials in 3D printing, often known as "4D printing," is not new, LLNL researchers are the first to combine the process of 3D printing and subsequent folding (via origami methods) with conductive smart materials to build complex structures.   Cont'd...

A New Effort to Teach Low-Income Students Marketable Skills

Mikahail Zinshteyn for The Atlantic:  The Obama administration is rolling out an experimental plan that will allow employers and training programs to partner with accredited universities to teach students work-related skills. This pilot will enable students to receive federal financial aid for programs that are typically ineligible for these funds, like coding boot camps. By pairing traditional universities with companies that train workers for in-demand fields like computer coding and advanced manufacturing, the U.S. Department of Education hopes to create a new model for delivering high-quality academic credentials to workers in a shorter period of time.  Cont'd...

Brookings Report - America's advanced industries: New trends

Brookings Report: Leaders in cities, metropolitan areas, and states across the country continue to seek ways to reenergize the American economy in a way that works better for more people. To support those efforts, this report provides an update on the changing momentum and geography of America's advanced industries sector-a group of 50 R&D- and STEM (science-technology-engineering-mathematics)-worker intensive industries the vitality of which will be essential for supporting any broadly shared prosperity in U.S. regions. What emerges from the update is a mixed picture of progress and drift that registers continued momentum in the manufacturing sub-sector; a major slump in energy; and strong, widely distributed growth in high-tech services- all of which adds up to a somewhat narrowed map of growth overall. Cont'd.. .

How 3D Printing Streamlines the Engineering Workflow

Michael Molitch-Hou for Engineering.com:  The desktop 3D printing space has become an interesting one in the last year or so, as manufacturers shift the focus away from consumers and towards professional and industrial users. The technology has proven that it may not quite be ready to produce consumer goods for every household—or perhaps households aren't quite ready for 3D printing at home. Those in the industry know, however, that low-cost 3D printing is still a powerful technology, if not for fabricating home goods, then as an early design tool and, in some cases, even for short-run manufacturing.   Cont'd...

Metal additive manufacturing software 'Amphyon' uses simulations to offset printing distortions

Benedict for 3Ders.org:  German startup Additive Works is developing a simulation-based preprocessing software for metal additive manufacturing. The “Amphyon” software package, currently in beta, uses a four-step approach which enables manufacturers to predict and avoid potential deformations in their printed parts. As the metal additive manufacturing industry expands its collective wealth of knowledge and experience, users of SLM 3D printers are becoming less likely to create faulty printed parts. While a complete amateur might make the mistake of printing an unsupported or weak structure which exhibits radical contortions before it has even left the print bed, most makers now know a few things about stress points, deformations, and how to avoid bad prints. Despite these advancements, problems still persist even for the most advanced users of laser-based 3D printers. Problems such as residual stresses, deformations, and insufficient part density can occur frequently and, due to various design, material, and hardware factors, can often be hard to predict.   Cont'd...

This Time, 3D Printer Makers Think They Found a Sweet Spot

Olga Kharif for Bloomberg Technology:  3D printing has long been a cool technology in search of a huge market. The industry may have found one in mass production. Because of its high cost and slow pace, 3D printing’s use in manufacturing has been limited mostly to prototyping, making plastic molds for teeth alignment and creating tools. That may be about to change, potentially lifting the shares of printer makers 3D Systems Inc. and Stratasys Ltd. after a long slump.  HP Inc. will introduce a $130,000 printer later this year, which it says can make parts at half the expense and at least 10 times faster than rival printers -- and likely use lower-cost materials. While HP’s entry could be a competitive blow, it may also help expand the market for 3D mass production, where other printer companies have already turned their focus. Jabil Circuit Inc. plans to be an early adopter of HP’s device, printing end plastic parts for aerospace, auto and industrial applications that it currently makes using processes such as injection molding, John Dulchinos, vice president of digital manufacturing at the electronics-manufacturing service provider, said in an interview.   Cont'd...

3D Hubs, an online marketplace for local 3D printing, scores $7M Series B

Steve O'Hear for TechCrunch:  3D Hubs, an online marketplace for 3D printing services, is tapping into two recent trends enabled by industrial 3D printing: the rapid prototyping of new products, and the move to personalised and bespoke production. The Amsterdam-headquartered startup connects those requiring 3D printing with local 3D printers, both through its website that lets you order 3D printing jobs online, including getting a real-time quote, and via an API that enables companies to automate short production runs of products on-demand. The latter, of course, is also powering “zero-inventory” manufacturing: products are only produced on a per-order basis (and in some instances are also fulfilled directly to the end customer), which is another trend that is starting to gain traction.   Cont'd...

Have we solved the nanomaterials problem?

Nick Hall for 3D Printing Industry:   Researchers at Virginia Tech have potentially cracked a conundrum that has tormented the scientific community and created a viable method to produce usable metallic nanomaterials. Of course, 3D printing provided the answer and this really could change the world we live in. Nanostructures have the capacity to disrupt a number of industries and they can revolutionize material science, medicine and battery technology to name just a few. If we can truly harness nanomaterials then almost every facet of modern life will change, from the clothes we wear to our water filtration system. It’s one of those breakthroughs that really could change everything. So the potential is immense, but nanostructures are complex to produce in usable form. Scaling them up to a workable size has caused issues with the structural integrity, performance and consistency. Outside of the theoretical setting, they have largely frustrated us.   Cont'd...

Norsk setting up industrial scale additive manufacturing plant in New York

Aerospace Manufacturing & Design:  Norsk Titanium U.S. is building the world’s first industrial-scale metal additive manufacturing plant by 2017 in Plattsburgh, New York. Officials at the aerospace structural company say the state of New York and the State University of New York (SUNY) Polytechnic Institutehave place an order for 20 Norsk MERKE IV Rapid Plasma Deposition (RPD) machines. “We are proud to be a part of the unwavering vision and leadership of Governor Cuomo and are moving forward in support of his efforts to revitalize upstate New York with jobs, technology and community pride,” says Norsk Titanium Chairman of the Board John Andersen Jr. “Our researchers have spent ten years pioneering the Rapid Plasma Deposition process that is now ready to cut millions of dollars in cost from the world’s premier commercial and military aircraft, and with the foresight displayed in other sectors, the State of New York is the ideal place to launch this manufacturing revolution.” Norsk Titanium President and CEO Warren M. Boley Jr. adds, “Today marks the beginning of a new erain the way aircraft, marine vessels, automobiles, spacecraft, and many industrial products are designed and built. Not only are we creating jobs, huge economic impact and great visibility for the wider Plattsburgh community, we are also making history by kicking off a new phase of on-demand, near-net-shape manufacturing that sets a new benchmark of efficiency and customer responsiveness.”   Cont'd...

Atomic-scale additive manufacturing techniques could create stronger, lighter, smarter materials

Benedict for 3Ders.org:  Researchers at Oak Ridge National Laboratory have predicted that atomic-scale 3D printing techniques could be used to create stronger, lighter, and smarter materials. Focused electron- and ion-based methods could be used to develop quantum computers, efficient solar cells, and other technology. In a paper published in the journal ACS Nano, ORNL researchers have reviewed several methods of atomic-scale 3D nanofabrication, suggesting ways in which the processes could be refined in order to perfect the art of creating material at the atomic scale. While traditional 3D printers deal with shapes divided into layers which are then turned into physical objects, the process known as “directed matter” involves fabricating structures atom by atom. Scientists believe that this form of additive manufacturing could allow manufacturers of the future to create near-perfect materials with incredibly precise structures.   Cont'd...

Printed Perforated Lampshades for Continuous Projective Images

From Haisen Zhao, Lin Lu, Yuan Wei, Dani Lischinski, Andrei Sharf, Daniel Cohen-Or, Baoquan Chen: We present a technique for designing 3D-printed perforated lampshades, which project continuous grayscale images onto the surrounding walls. Given the geometry of the lampshade and a target grayscale image, our method computes a distribution of tiny holes over the shell, such that the combined footprints of the light emanating through the holes form the target image on a nearby diffuse surface. Our objective is to approximate the continuous tones and the spatial detail of the target image, to the extent possible within the constraints of the fabrication process.  To ensure structural integrity, there are lower bounds on the thickness of the shell, the radii of the holes, and the minimal distances between adjacent holes. Thus, the holes are realized as thin tubes distributed over the lampshade surface. The amount of light passing through a single tube may be controlled by the tube's radius and by its direction (tilt angle). The core of our technique thus consists of determining a suitable configuration of the tubes: their distribution across the relevant portion of the lampshade, as well as the parameters (radius, tilt angle) of each tube. This is achieved by computing a capacity-constrained Voronoi tessellation over a suitably defined density function, and embedding a tube inside the maximal inscribed circle of each tessellation cell. The density function for a particular target image is derived from a series of simulated images, each corresponding to a different uniform density tube pattern on the lampshade... (full paper)

FIRST 3D TOOLS PRINTED ABOARD SPACE STATION

Evan Gough for UniverseToday:  Astronauts aboard the International Space Station have manufactured their first tool using the 3D printer on board the station. This is another step in the ongoing process of testing and using additive manufacturing in space. The ability to build tools and replacement parts at the station is something NASA has been pursuing keenly. The first tool printed was a simple wrench. This may not sound like ground-breaking stuff, unless you’ve ever been in the middle of a project only to find you’re missing a simple tool. A missing tool can stop any project in its tracks, and change everybody’s plans. The benefits of manufacturing needed items in space are obvious. Up until now, every single item needed on the ISS had to be sent up via re-supply ship. That’s not a quick turnaround. Now, if a tool is lost or destroyed during normal use, a replacement can be quickly manufactured on-site.   Cont'd...

How Big Area Additive Manufacturing is Enabling Automotive Microfactories

Ian Wright for Engineering.com:  Make no mistake, 3D printing is changing manufacturing. Although it may take years before we see the full impact of bringing this technology from rapid prototyping to full-scale production, there are already hints of big things to come. Take Local Motors’ recent purchase of two Big Area Additive Manufacturing (BAAM) systems from Cincinnati Incorporated (CI) as an example. The former company designs, builds and sells custom vehicles out of its US-based microfactories. The latter is a century-old manufacturer of metal fabrication tools and, more recently, BAAM.   Cont'd...

Computational Hydrographic Printing

From Yizhong Zhang, Chunji Yin, Changxi Zheng, Kun Zhou's paper:   Hydrographic printing is a well-known technique in industry for transferring color inks on a thin film to the surface of a manufactured 3D object. It enables high-quality coloring of object surfaces and works with a wide range of materials, but suffers from the inability to accurately register color texture to complex surface geometries. Thus, it is hardly usable by ordinary users with customized shapes and textures. We present computational hydrographic printing, a new method that inherits the versatility of traditional hydrographic printing, while also enabling precise alignment of surface textures to possibly complex 3D surfaces. In particular, we propose the first computational model for simulating hydrographic printing process. This simulation enables us to compute a color image to feed into our hydrographic system for precise texture registration. We then build a physical hydrographic system upon off-the-shelf hardware, integrating virtual simulation, object calibration and controlled immersion. To overcome the difficulty of handling complex surfaces, we further extend our method to enable multiple immersions, each with a different object orientation, so the combined colors of individual immersions form a desired texture on the object surface. We validate the accuracy of our computational model through physical experiments, and demonstrate the efficacy and robustness of our system using a variety of objects with complex surface textures...  (full paper)

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