“O” Flute with a cutting tip diameter of 1/8″ and a 1/8″ LENGTH of CUT. Excellent for Cutting: Plastic/Acrylic LED Back-lit and Side-lit displays and control panels Sign Foam Corian Fiberglass Corrugated Plastics such as Correx Boards and Polypropylene Dibond Plexiglas Hard/Soft wood Wood cabinetry and sign making   What is a O Flute bit? *Or sometimes this type of bit is called a Single Flute bit* Our “O” flute tools are manufactured from solid carbide tool material in straight and spiral configuration. The upcut, or right hand spiral is most readily utilized because of the need to evacuate chip in an upward direction in flat sheet or block applications. Upward movement of chips avoids welding, which is a common problem in the machining of plastic. With a high rake angle and relatively low helix, O-flute cutters manage to cut acrylic, polycarbonate, ABS, PVC at very high chip loads without raising a burr or fracturing the edges of the surface. All of this while leaving a really clean surface finish. “O” flutes also work incredibly well in wood and aluminum with effortless chip removal!