While working on a project for a television program,
several-times-over Gadget Freak John Tindall started tinkering with a pulsejet
engine. Pulsejet engines were used by the Germans during WWII. The technology was
left behind by turbofan jets. But Tindall found the pulsejet well-suited to garage
- and Gadget Freak - tinkering. Apparently there is a wide community of
hobbyists playing with pulsejets at home. Tindall came up with a cyclonic-valve
radial design that makes for smoother airflow. He proved the concept with
plastic and aluminum valves - but the gadget backfired and blew up. Next step, a
An in-depth survey of 700 current and future users of 3D printing holds few surprises, but results emphasize some major trends already in progress. Two standouts are the big growth in end-use parts and metal additive manufacturing (AM) most respondents expect.
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.