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. The augering action helps clear chips from the cut. This can support smoother routing and more efficient material removal. It is especially useful when repeatability matters across multiple parts.

The ‘Down-Cut’ cuts from the surface down, leaving a smooth edge at the surface. This Spiral Flute design can help maintain a cleaner top edge. It is useful when surface finish matters on visible faces. It also supports controlled cutting in common sheet materials used in cabinetry and production work.

Amana Tool® solid carbide router bits provide consistent, repeatable quality. Every tool is guaranteed to match the geometry on the prints, every time on every order. Best control of carbide grades for woodworking, and absolute control of quality standards on all carbide blanks. Special unique carbide grade, increased clearance geometry, and razor-sharp cutting edges with polished flutes provide a superior finish and longer tool life, especially in abrasive materials. Great for production settings and excellent for creating grooves and dado cuts in particleboard, plywood, and laminate. Primarily used on CNC machines and other automatic routers. This CNC bit can be used with handheld and table-mounted portable routers. For best performance, use the bit in the correct collet and keep it clean during regular use. Proper handling and routine inspection can help maintain cut quality over time. Trusted amana quality supports consistent results in demanding shops.