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John Christian

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Round-Engine Revival

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A visit to Verner Motor in the Czech Republic. By John Christian.

In Case You Missed It

Rapid Prototyping and Experimental Design

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Sandwich panels, part 5-a simple, accurate method for molding flanged parts.

NPT and Aircraft Fittings–Don’t Get That Size Wrong!

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National Pipe Thread‭ ‬is a U.S‭. ‬standard for‭ ‬tapered‭ ‬threads‭, ‬which we find on...

Aircraft Wiring

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Good things to know while building your electrical system.

Dan’s World

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Sometimes its surprising to see homebuilt aircraft kits languishing in garages or hangars or workshops. Especially the quickbuilds, which raises the question of whether there's something about buying a QB kit that leads to procrastination. Columnist Dan Checkoway ponders the question, looking to his own experience for an answer.