Kerf Locks are short plastic horseshoes shaped components, which are designed to simplify knife insertion, to lock and hold short knives, and to enable simple and easy removal of the knife. To use Kerf Locks, the dieboard is prepared with rectangular cavities cut in the position short knives are to be inserted. See illustration 1. Kerf locks are inserted into the dieboard at these points, see illustration 2, and then the knives are inserted into the dieboard. See illustration 3.