Description
Spiral-flute bits combine a shearing action in cutting with an augering action in chip clearance. The shearing action yields an especially clean, accurate cut, while the augering action clears chips from the cut. The "up-cut" shears from the bottom up, pulling chips from the bottom, thus allowing deeper cuts with less stress on the tool. It is an excellent choice for mortising. These bits are great for production settings and excellent for creating grooves and dado cuts in softwood, hardwoods, plywoods and composite materials. Primarily used on CNC machines and other automatic routers. These bits can also be used with a hand-held and table-mounted portable router.