Abstract: A cutting tool mechanism including a slide member, a track member slidably guiding the slide member along a preselected path, a saw, and structure associated with the slide member for mounting the saw thereto. The mechanism includes structure for directing the user's hands away from the saw blade in the use of the mechanism, including a pair of handles at opposite sides of the saw mounting structure. The axis of the saw is disposed at a small angle to the slide plane, and to the direction of guided movement. Adjustable slide elements are mounted to the slide member for adjusting the disposition of the slide member on the track member. Adjustable track followers are adjustably mounted to the slide member for maintaining accurate guided fit of the slide member on the track member.