In Case You Missed It
Cut the Can, Man
Inspecting your filter after an oil change is a good idea, but what tool is best for opening the can? Bob Fritz tests the gamut of oil filter cutters so that you don't have to.
Aero ‘lectrics
The subject this month is Schmitt triggers and digital gates, which can be employed for a variety of purposes in homebuilt aircraft including use with switches and sensors or panel lighting.