Router Bits Buying Guide

Match the bit to the job

Router^★ bits are designed for particular cuts rather than being interchangeable simply because the shank fits the collet. Straight bits are useful for grooves, rebates and trimming operations, while bearing-guided flush-trim and pattern bits can follow an existing edge or template. Profile cutters such as round-over, chamfer and cove bits create decorative edges. Start with the cut you need, then select a profile and diameter that suits the material, router and required depth.

Check compatibility before cutting

Confirm the shank diameter matches the router collet and that the cutter is suitable for the machine and intended speed. The router manufacturer's instructions should be treated as the controlling information for maximum cutter size, speed ranges, collet fitting and depth of cut. A large cutter can behave differently from a small one, so do not choose a bit solely from a photograph or price. Inspect the cutter for damage, keep the shank clean and secure it correctly in the collet.

Cutting quality and safe working

Good results come from a stable workpiece, a suitable feed direction and controlled depth rather than trying to remove too much material in one pass. Use extraction where practical to control chips and dust, particularly when routing wood. HSE guidance for woodworking machinery stresses suitable tooling, guarding, information, training and control of hazards around rotating cutters. Isolate the machine before changing a cutter or carrying out adjustments.