Manufacturing operations such as die cutting and slitting of sheet materials result in wear of the tooling. A new method for measuring the abrasive properties of paper and other sheet materials is proposed. The method continuously monitors the force required for penetrating a sheet sample as multiple punches are made with a needle. Abrasive wear caused by the sheet sample changes the geometry of the needle, and consequently changes the penetration force. The trend of the force is used as a measure of the abrasivity of the sheet sample. Several sheet paper samples were tested using this method with two different needle geometries. In all cases, the magnitude of the force decreased with an increasing number of punches. The rate of change of force depends on the type of paper and the initial geometry of the needle.