An accessory tool for an oscillating tool includes a first metal plate and a second metal plate fixed together to form a body having a first end portion formed by the first metal plate and a second end portion formed by the second metal plate. The first end portion defines a linear cutting edge, and the second end portion defines a drive interface for mounting the accessory tool onto a tool holder of an oscillating tool. The second metal plate includes an overlapping portion that overlaps a portion of the first metal plate. At least one of a first lateral portion and a second lateral portion of a leading edge of the overlapping portion is spaced farther away from the cutting edge than a central portion of the leading edge of the overlapping portion.