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In Case You Missed it

The Home Machinist (Part 11)

In our continuing series, author Bob Fritz explains how to use a boring head to drill odd-size or big holes. Hint 1: The bigger the hole, the slower the going. Hint 2: The traveling rest, which moves with the cutting tool, braces the material in two directions to minimize flexing.

Free Flight

Why do seemingly simple modifications wind up taking so much time to complete?

Kit Stuff

Engine Beat

Do kit aircraft owners have to comply with ADs? Steve Ells examines the dos and donts of this tricky question.