The rapid prototyping industry is growing a robust 32% a year, but has not realized the potential first envisioned when it emerged in the 1980s. Complexity and cost of ownership slowed its growth. It became almost cult-like with enthusiasts obsessing on fine details of machine technology. The industry needs to do a better job of reaching out to design engineers. It could be a perfect fit. Many engineers, particularly in the medical device industry design what they need, and then have to make compromises because of manufacturing constraints. The additive fabrication developed originally to make prototypes now has the potential to bust those constraints wide open because no molds are used and complex internal geometries are easily achieved. I’m thinking, for example, of jaws made for surgical instruments. Now, they are often injection molded from powder metal. New additive technology now allows parts such as jaws to be from laser sintering with internal channels of almost any design. Sure there are some drawbacks: less than perfect surface finish out of he machine, weak industry-wide standards, and lack of closed loop machine controls. But this is a marriage waiting to happen.
BMW has already incorporated more than 10,000 3D-printed parts in the Rolls-Royce Phantom and intends to expand the use of 3D printing in its cars even more in the future. Meanwhile, Daimler has started using additive manufacturing for producing spare parts in Mercedes-Benz Trucks.
SABIC's lightweighting polycarbonate glazing materials have appeared for the first time in a production car: the rear quarter window of Toyota's special edition 86 GRMN sports car, where they're saving 50% of its weight compared to conventional glass.
Design engineers play a big role in selecting both suppliers and materials for their designs. Our most recent Design News Materials Survey says they continue to be highly involved, in some ways even more than the last time we asked to peek inside their cubicles.
Daihatsu is one of the first carmakers to customize car exteriors using 3D printing's mass customization capabilities. Effect Skins -- small exterior bumper and fender panels in different colors and textures -- can be ordered for its Copen convertible.
Several new products in this group of new adhesives, coatings, and sealants are formulated to protect sensitive electronic components, or to seal components of commercial and military aircraft. Others are designed to operate in tough, messy, dirty oil & gas operations, or for rotary applications and motors.
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