Increasing Surface Contact with Ground Gears

Older drivers probably owned a car during a time when most automobiles in the United States had a manual transmission. For those people, learning to drive “stick” meant learning how to use a clutch and change gear ratios while keeping the car in gear. When they did not execute the motion smoothly, they resorted to the all too common phrase, “If you can’t find them, grind them.” This is not at all what we mean when we refer to ground gears in modern industrial applications.