![Trimming composites gets the full PPE job. [Credit: Eric Stewart]](https://www.kitplanes.com/wp-content/uploads/2026/07/7-2.jpg?w=534&h=462&crop=1 "A Few of My Favorite Tools")
![Lowell Farrand spent years serving as an FAA DAR and is in the EAA Hall of Fame. He offers sound advise to builders. [Credit: Bill Wilson]](https://www.kitplanes.com/wp-content/uploads/2026/05/unnamed-4.jpg?w=265&h=198&crop=1 "Think Like a Builder")
![Author Bill Wilson takes a break from measuring and cutting the Lexan windshield during his Onex build. [All Images Credit to Bill Wilson]](https://www.kitplanes.com/wp-content/uploads/2026/04/image-2.jpg?w=265&h=198&crop=1 "Think Like A Builder")
Engine Mounts
Many factors go into designing and building good engine mounts, including consideration of the engines thrust line and gyroscopic precession effects. They deserve our respect.
Aero ‘lectrics
Documenting the changes you make to your airplanes electrical system is tedious work-but vital. Jim Weir takes a look at the software available to help you keep track of upgrades and mods.
Aero ‘lectrics
Jim Weir takes a look at low-cost and free CAD software available to help you document modifications you've made to your aircraft.
Aero ‘lectrics
Jim Weir takes a look at the performance of a DIY ground-plane antenna versus a factory-built rubber duckie on a handheld GPS receiver.
Aero ‘lectrics
Jim Weir offers a solution for how to regain reception when your rubber ducky antenna fails.
Aero ‘lectrics
Proper sizing and selection of the wire that goes into an aircraft can have a profound effect on the efficacy of the installation.
Aero ‘lectrics
Transistors don't like excessive heat, but there's a way to beat it: an engineered heat sink.
Aero ‘lectrics
Jim Weir describes some close encounters with power regulators of the plastic and metal-can kind.
In Case You Missed It
Troubleshooting 102: EFIS
Calibration and hardware installation errors are common sources of trouble, so follow the install manuals to the letter.
Light Stuff
The 2012 World Paramotor Championship provided an excuse for a trip to the mountains of Spain, and an opportunity to see the world’s best in action. Roy Beisswenger helped judge the proceedings (and seemed to be the only American there).