Rehkemper Invention and Design, which spends most of its time inventing new toys, has broadened its capabilities and designed a product for the health care market. Using SolidWorks CAD (www.solidworks.com) software, the toy firm created a dental-care system that combines a toothbrush, tongue brush, and irrigator. The AquaSonic Oral Care System requires no batteries or electricity because it works on air pressure— similar to Rehkemper's toy plane designs. Engineers used the software to design everything, right down to the bristles. "It was easier to see what we were designing with 3D models than with drawings or continuous mockups," says CEO Steve Rehkemper. He adds that the software cut time production by 50%.
Producing high-quality end-production metal parts with additive manufacturing for applications like aerospace and medical requires very tightly controlled processes and materials. New standards and guidelines for machines and processes, materials, and printed parts are underway from bodies such as ASTM International.
Engineers at the University of San Diego’s Jacobs School of Engineering have designed biobatteries on commercial tattoo paper, with an anode and cathode screen-printed on and modified to harvest energy from lactate in a person’s sweat.
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