The Freud 18-116 1/4-Inch Radius Round Nose Router Bit is a carbide-tipped edge treatment router bit built for engraved grooves, fluted millwork, sign lettering, and decorative veining. This is a round nose router bit designed for cutting smooth, rounded-bottom channels in wood and composite materials. Model Number 18-116. If you want a clean flute profile without fussing with improvised setups, this is the right bit for that job.

Freud builds this bit with a 1/4 inch radius cutting profile, a 1/2 inch overall diameter, and two cutters. In practical use, that means you get a defined round-bottom groove that works well on cabinet doors, drawer fronts, molding details, and routed signs. The two-cutter design helps balance the cut and keeps the finish more controlled when you are working across hardwood, softwood, plywood, or composite stock.

The 1/2 inch shank is a big part of why bits like this earn a place in a serious router setup. Compared to smaller shanks, a 1/2 inch shank generally gives you a more stable feel in the cut, which matters when you are chasing smooth lines and repeatable decorative work. That is especially useful for fluting and sign routing, where chatter or deflection shows up fast in the finished piece.

Freud lists this bit for use on CNC machines, other automatic routers, hand-held routers, and table-mounted portable routers. That gives the Freud 18-116 1/4-Inch Radius Round Nose Router Bit a wider range than a lot of profile bits that mainly live in a router table. If your work moves between one-off custom pieces and batch production, that flexibility is a real advantage.

The solid carbide cutting edge and carbide-tipped construction are aimed at long service life and consistent cutting performance. This bit is made to cut composition materials, plywoods, hardwoods, and softwoods, so it is not locked into one narrow use case. Freud also notes a Perma-SHIELD non-stick coating that helps reduce drag and protects against corrosion and pitch build-up, which is the kind of detail that matters when resin and dust start loading up the bit during repeated passes.

With a maximum speed rating of 24,000 RPM, this router bit is suited for modern router platforms that run at higher speed. The 1-1/8 inch flute length gives you enough cutting height for a range of decorative groove work, while the 2-13/16 inch overall length fits the kind of setups most woodworkers are already running. There is no bearing on this bit, which makes sense because it is meant for freehand, fence-guided, template-guided, or programmed routing rather than edge-following profile work.

This bit makes the most sense for woodworkers, cabinet shops, trim carpenters, sign makers, and CNC users who need a clean round-bottom channel for detail work. If your projects include fluted millwork, custom lettering, or decorative grooves in doors and drawer fronts, this profile earns its keep fast. If you need a bit for simple edge rounding, this is not that tool. If you need controlled grooves and engraved detail, it absolutely is.

Freud 18-116 1/4-Inch Radius Round Nose Router Bit for clean flutes and sign work

This is the kind of specialty router bit that earns its spot fast if you do decorative groove work more than once in a while.

• Who it's for: Woodworkers, cabinet makers, and CNC users cutting fluted details, rounded grooves, or sign lettering in wood and sheet goods.
• Why it stands out: The 1/2 inch shank, two-cutter design, and broad router compatibility make it more useful and more stable than bargain-profile bits.
• Worth knowing: This is a groove-cutting bit, not an edge-forming bit, and it does not include a bearing. Make sure your router accepts a 1/2 inch shank before you order.

• What is this bit mainly used for? It is designed for fluted millwork, sign lettering, decorative veining, and engraved detail on doors, drawer fronts, and molding.
• What materials can it cut? Freud lists this bit for hardwood, softwood, plywood, veneered plywood, and composite materials.
• Can it be used in a CNC router? Yes. It is rated for CNC and other automatic routers, along with hand-held and table-mounted portable routers.
• What shank size does it use? It has a 1/2 inch shank, so your router needs a matching 1/2 inch collet.