Perhaps you have a "Big Mouth Billy Bass," given to you circa 2001. If so, its limited repertoire has probably grown stale. As a Gadget Freak reader it probably crossed your mind to teach your "fish" to sing new songs, such as Monty Python's "Lumberjack Song." Well, you can give Big Mouth Billy Bass an ARM-powered brain transplant so it will play .wav files from an attached micro-SD card, and you can choreograph its movements to match.
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.
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.