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Columnist Dave Martin had the good fortune to be able to tour the new Rotax engine factory in Gunskirchen, Austria, and he offers a report on the trip including a side trip to Salzburgs Hangar-7.

Axial stresses and the stress strain diagram.

This article covers what you should have learned in your high school shop class, but didn't, and more. It discusses safety glasses, proper treatment of chisels, gloves, jewelry, shop coats, hand tools, urban myths, safe shoes, hardware, biomechanics, capturing wayward chips, machinery placement in the shop, air-powered tools, cleanup, pneumatic cutting tools, and other common sense advice; by Bob Fritz.

How to properly remove bad or damaged rivets. You'll probably do this a lot over the course of an airplane project!