US Patent 9522432 Cradle cutter

The claimed subject matter provides a cutting head for oscillating tools including a concave or recessed cutting edge. The cutting edge can be a recessed curve, an angular recess, or a combination of the two. The cutting edge can include one or more of serrations or cutting grit. The cutting head can conform to a variety of work piece geometries and cradle the work piece during cutting to prevent slipping and provide faster cuts by applying a greater proportion of the blade to the work piece at once and retaining the work piece between sides of the recess.