Spin is created whenever the club comes into contact with the golf ball. If you hit the ball with the sweet spot of the club, then that will produce the most spin possible for that respected club you hit the ball with. However, even if you hit it with the sweet spot of the club and your club is not clean then you could be suffering from distance loss and spin loss due to the clubs not being clean. If you ever watch golf on television, all the players club are clean as a whistle in order to produce consistent results with spin and distance. You should always purchase a groove cleaner before you go out to the course.