Lapping is a final abrasive finishing operation that produces extreme dimensional accuracy, corrects minor imperfections of shape, refines surface finish and produces close fit between mating surfaces ...

Lapping valves is a time-honored tradition in building engines that dates back likely to the earliest internal combustion engines. The time-honored process involves placing some valve lapping compound ...

Ever heard of lapping compound? No? Nor had I until I started researching how to sharpen my old reel mower. I was up for anything if it didn’t involve loading the damned thing into the car and driving ...