Home Machinist Bob Fritz had been looking for a way to compare the effectiveness of various screw extractors he had accumulated in his toolbox, and he found a willing test subject in a Cessna 170s 60-year-old gas tank.
Editor-in-Chief Marc Cook highlights an intriguing product that caught his eye at AirVenture Oshkosh 2007, and he reiterates the difficulty of bringing new engines to market.