A bone stock cleaning assembly includes a shell having a base and a top located above said base so as to have between said base and said top a void space, a cutter formed with a plurality of cutting edges that is rotatably mounted to in the shell void space, a shaving tube disposed around the cutter, the shaving tube being formed to have at least one shaver edge that is located adjacent said cutting edges of the cutter, and a guide disposed in the shell void space, the guide moveable between a disengaged position and an engaged positon and said guide configured to, when moving from the disengaged position to the engaged position, move bone stock received in the void space towards the cutter. The guide is an arm disposed over the shell base that is mounted to the shell to reciprocate over the base between the disengaged and engaged positions so as to, when moving from the engaged position to the disengaged position, allow reorientation of bone stock located between the cutter and said arm and that has a containment wall that is shaped to, when said arm moves from the disengaged position to the engaged position, direct the bone stock towards the cutter and the at least one shaving edge of the shaving tube and that has a face that, when said arm is in the engaged position, presses the bone stock against the cutting edges of the cutter.
