Abstract: An apparatus and process for cutting a precise even groove into a concrete wall for tilt-up roof panel installation. The apparatus includes a platform assembly to which a saw assembly is mounted. The platform assembly includes at least one forwardly projecting roller wheel firmly biased against the top surface of a concrete wall and at least two vertically suspended guiding roller wheels. The platform assembly rolls across the top surface of a concrete wall to guide and support the attached saw frame, which holds a concrete, saw motor and a saw blade at a desired angle.

Abstract: A separator tool specifically designed for pressure fitted bearings, sprockets, pulleys and flanges is disclosed. The separator tool is threaded and presents a ball bearing on one end and a means to rotate the tool on another end. The ball bearing is held in place by a magnet to permit ease of rotation without loss of such ball bearing. Rotating means can be a conventional hexagonal bolt head.