Everywhere I explored at Rapid 2009, it was apparent there is a battle under way in materials technology in the fast-emerging rapid manufacturing industry. Some suppliers have “real” materials. Others are stiff and tough. Some are clear. Design engineers can be excused if they can’t keep it straight. You virtually need to keep a daily scorecard. And no matter what you pick, you are probably making some type of tradeoff. There may be some sacrifice in surface finish or accuracy in a laser sintering process. But you get real world metals and plastics that are actually used in functional applications. The range of materials’ qualities you can get with stereolithography systems is impressive. They are increasingly stiff and tough, and will be getting better in terms of thermal properties. Both systems offer the opportunity to create intricate internal shapes, though. And that’s something that’s expensive and difficult to achieve in the injection molding process.
Instead of sifting through huge amounts of technical data looking for answers to assembly problems, engineers can now benefit from 3M's new initiative -- 3M Assembly Solutions. The company has organized its wealth of adhesive and tape solutions into six typical application areas, making it easier to find the best products to solve their real-world assembly and bonding problems.
Many of the materials in this slideshow are resins or elastomers, plus reinforced materials, styrenics, and PLA masterbatches. Applications range from automotive and aerospace to industrial, consumer electronics and wearables, consumer goods, medical and healthcare, as well as sporting goods, and materials for protecting food and beverages.
Engineers trying to keep track of the ever-ballooning number of materials and machines for additive manufacturing and 3D printing now have some relief: a free searchable database with more than 350 machines and 450 different materials.
At JEC Europe Dow Automotive introduced a new ultra-fast, under-60-second molding cycle time for its commercial-grade VORAFORCE 5300 epoxy resin matrix for carbon composites. It's aimed at high-volume automotive manufacturing.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.