Processing a work piece by first scanning the work piece. The work piece is modeled to determine its weight, outer perimeter and/or how the work piece could be divided into portions of specific areas and perimeters based on desired portion weights of desired areas and perimeters. The modeled work piece and/or the modeled portions are compared with the one or more desired perimeter configurations. The deviation of the modeled outer perimeter size of the work piece and/or portions from the desired perimeter configuration(s) is calculated. Based on such calculations, one or more steps in processing the work piece and/or portions therefrom is carried out. Such one or more steps may include modeling the work piece again, using different modeling criteria or options, if the calculated deviation is outside an acceptable range.