Mastering the Air Powered Valve Lapping Tool
If you've ever spent three hours hand-lapping valves, you know exactly why an air powered valve lapping tool is such a lifesaver for anyone rebuilding an engine. There is something almost meditative about the rhythmic "thwack-thwack-thwack" of the tool doing the hard work while you just guide it. Doing it by hand with a little wooden stick and a suction cup might be the "old school" way, but honestly, my wrists aren't what they used to be, and the precision you get from a pneumatic setup is hard to beat. ...