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David Paule

David Paule
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David Paule retired after 30 years of structural analysis and is now building an RV-3B to keep from getting bored. The structural engineering included a mix of aircraft and spacecraft. He has been a private pilot since age 18 and currently owns and flies a Cessna 180.

Close Flanges

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What to do when you need to install a rivet, but an unrelated flange is in the way.

Vacuuming Connectors

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Vacuum electrical connectors before installation to avoid difficult troubleshooting later.

Square Ends on Round Tubes

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Make your cuts square on round tubes.

Magnet Clamps

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Use magnets to clamp parts.

Worktable Suggestions

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Tips for a smooth tabletop.

Marking to Make a Planar Cut on a Curved Shape

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Laser torpedo level makes the task easier.

Clamp Stick

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By David Paule

Stressing Structure

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Beam column bending.

Stressing Structure

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Crashworthy design overview.

Measuring Curved Surfaces

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Use sewing tape.

In Case You Missed It

Kit Stuff

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Alternative Energies

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Electric motorgliders are leading the way in low-cost, fuel-efficient flight. In the second installment of his two-part series, Dean Sigler profiles seven designs at the forefront of this emerging field.

Practical Electrical

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Battery facts and fables: lithium lead-acid equivalency. By Robert L. Nuckolls, III.

Aero ‘lectrics

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Columnist Jim Weir has completed his solar-powered battery charger, and it works! It may not be the fastest charger, but it is certainly up to the task of keeping a battery topped off, even in winter.