An anonymous reader writes: As technology improves, inventions that were once seen as merely science fiction are becoming reality and providing new solutions to health problems. One area of technology revolutionizing health is in the field of prosthetics, where 3-D printing allows doctors and engineers to partner to rebuild limbs faster and cheaper than ever before – especially for children.
3-D printing works by melting thin plastic filament and squeezing it through a nozzle, building up computer-generated renderings layer by layer, says John Rieffel, assistant professor of computer science at Union College in Schenectady, New York, who specializes in 3-D printing. “You can think of a 3-D object as being composed by numerous 2-D slices,” he says. “3-D printers build those slices from the bottom layer up.”