automatically rotates the core cutter knife to produce more clean cut cores from every knife. The indexer automatically and precisely rotates the knife based on a preset number of cuts. While significantly extending knife life, hands-free automatic knife adjustments also improve worker safety and decrease downtime. Operators now only handle the knife for blade replacement. The AIK can be easily retrofitted to existing Appleton core cutters or added to new models. This easy-to-install indexer includes a control panel interface and a new knife holder.