Router Bits & Sets

The most useful router bits for a beginner are a straight (or spiral up-cut) bit for cutting dadoes and grooves, a round-over bit for softening edges, a flush trim bit for pattern routing and laminate trimming, and a chamfer bit for angled edges. These four bits cover the most common routing tasks you will encounter when making furniture, boxes, or cabinetry, and form a practical starting point for any router kit.

Hammer Roo stocks router bits across the following categories: straight bits, round-over bits, flush trim bits, chamfer bits, surfacing bits (for slab flattening), dish carving bits, and router accessories including collets, guide bushes, and router table components. Whether you are doing basic edge profiling or complex slab work, the range covers most woodworking routing applications.

Hammer Roo stocks both 6mm (1/4 inch) and 12mm (1/2 inch) shank router bits to suit different routers. Larger 12mm shank bits are more rigid and better suited to heavy-duty applications like slab flattening, while 6mm shank bits are the standard for compact routers and trimmer routers. Always check your router's collet size before ordering to ensure you choose the correct shank.

A surfacing router bit, also called a slab flattening bit or spoilboard cutter, is a wide-diameter bit designed to skim a flat surface across large areas like timber slabs, router sled work, and CNC spoilboards. Rather than cutting profiles or edges, it removes material in wide, flat passes to level an uneven surface. It is typically mounted in a router attached to a simple sled that traverses the slab and is one of the most practical ways to flatten a wide slab without a large jointer.

A flush trim bit has a bearing mounted on it, at the top or bottom of the bit, that rides along a template or reference surface while the cutting edges trim the workpiece to match. It is used for pattern routing (cutting a shape to match a template exactly), trimming laminate or veneer flush to the substrate, and cleaning up assembled edges. The flush trim bit is one of the most versatile bits in a woodworking setup and is an essential addition to any router kit.