Abstract: A utility knife body apparatus and related method of use, comprising: a blade slot for containing part of a utility knife blade interior to the utility knife body while a remaining part of the utility knife blade protrudes exterior to the utility knife body; a material comprising a shattering impact resistance greater than or equal to the shattering impact resistance of steel; a one-piece fabrication omitting a separation juncture for separating the knife body into two halves; and a blade position securing apparatus for securing the utility knife blade firmly in position relative to the utility knife body, substantially without relative movement between the utility knife blade and the utility knife body during hammering of the utility knife body.