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For a broad, rounded corner on a shelf or tabletop, use a smooth reusable template and a bearing-guided router bit. For a small curve along an edge, use a roundover bit sized to the radius you want. The methods are different: a roundover bit softens an edge, while a template guides the router around a larger corner.
Choose the right method for the corner
| What you want | Method | Best fit |
|---|---|---|
| A broad curve at the end of a shelf or tabletop | Template, rough-cut, then bearing-guided pattern or flush-trim bit | Repeatable corners; handheld router or router table, depending on the bit and setup |
| A small, consistent curve along a sharp edge | Roundover bit selected by radius | Softening an edge rather than shaping the whole corner |
Make a wide-radius corner with a template
A template gives the router a consistent path and makes matching corners repeatable. Its curved edge must be smooth: imperfections in the template will transfer to the workpiece.
Make and prepare the template
- Choose the corner radius and mark the curve on 1/2-inch or 3/4-inch plywood or MDF. Use a compass to mark the arc.
- Cut on the waste side of the line with a jigsaw. Sand the curve to the line with 80- or 100-grit sandpaper until it is even and smooth.
- Attach edge guides or fences far enough from the curve to stay clear of the router and bit.
Transfer and rout the corner
- Trace the template curve onto the workpiece.
- Rough-cut the waste close to the line, leaving a small amount for the bearing-guided bit to remove. For a router-table setup, Woodcraft’s method calls for sawing to within 1/8 inch of the line.
- Choose the bit and setup to match your equipment. A top-bearing pattern bit lets the bearing ride on the template with a handheld router. A flush-trim bit with a shank-mounted bearing can be used with the template on a router table.
- Keep the workpiece firmly against the template and its fences while routing. Make a test cut on scrap first.
A carefully sanded template and bearing-guided bit can reproduce the same corner on multiple pieces. Do not try to remove all the excess material in one aggressive pass; follow the router manual’s guidance on multiple passes for your tool and material.
Use a router table and flush-trim bit
For small tabletops and shelves, Woodcraft contributor Marvin Mertz describes using a 1/2-inch hardwood-plywood template with two fences set back from the curve. The template guides the workpiece as it passes the bit.
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#1 Best Overall
TOTOWOOD Roundover Router Bit Set，4pcs Router bit Set，1/4 inch Shank，Radius in 1/8", 1/4", 3/16", 5/16"，Bearing Guide for Rounding Edge bit (4pcs Roundover Router Bit)
- TOTOWOOD Roundover Router Bit Set，4pcs Router bit Set，1/4 inch Shank，Radius 1/8", 1/4", 3/16", 5/16"
- High-quality carbon steel, high-quality tungsten steel alloy, high-tech special grinding process, good blade strength, high hardness, sharp and wear-resistant, higher efficiency, providing clean and sharp cutting.
- The roundover router bit is suitable for cutting a variety of composite materials such as solid wood, hardwood, softwood, MDF, particle board, plywood solid wood and acrylic.
- The roundover router bit set uses premium C2 carbide inserts that are sharper and more durable
- The roundover router bit use on CNC and other automatic routers. Such as woodworking engraving machine, trimming machine, CNC hand-held, table-mounted router, etc.
- Trace the template onto the workpiece and saw away the waste, stopping about 1/8 inch from the line.
- Install a flush-trim bit with a shank-mounted bearing and position the template so the bearing rides against it.
- Hold the workpiece firmly against both fences. Move it against the rotation of the bit; do not make a climb cut.
This arrangement depends on stable workholding. If you cannot keep the stock firmly against the fences throughout the cut, stop and improve the setup before routing.
Soften an edge with a roundover bit
A roundover bit’s stated size is the radius it cuts: for example, a 3/8-inch roundover bit cuts a 3/8-inch radius. Common sizes cited by WOOD include 1/16, 1/8, 1/4, 3/8 and 1/2 inch. Choose the radius that matches the profile you want; a 1/4-inch bit is one common general-purpose size, not a requirement.
Rank #2
6Pcs Roundover Router Bit 1/4 Shank,Radius 1/8" 3/16" 1/4" 5/16" 3/8" 1/2"
- 【Size】Round over edge router bit with 1/4Inch(6.35mm) shank, Radius: 1/8"(3.17mm),3/16"(4.76mm),1/4"(6.35mm),5/16"(7.93mm),3/8"(9.52mm),1/2"(12.7mm). Perfect for stencil cutting and other woodworking DIY projects.
- 【Top Quality】Made from top YG6 tungsten carbide blades, solid hardened 1045 steel body with clever anti-kickback design for sharp and long-lasting cutting;
- 【Wide Applications】This professional round end mill bit set is suitable for hardwood, softwood, MDF, chipboard, plywood, acrylic and various wood composites (Avoid cutting metal and non-wood materials such as steel, iron and sand).
- 【Applicable equipment】Use on CNC and other automatic routers, as well as portable and table-mounted routers, such as Bakelite milling machine, engraving machine, deburring machine, table router, hanger milling machine, etc.
- 【Safety Instructions】The universal 1/4Inch round shank bits provide greater stability and less vibration during use.Note: When installing on the electric drill, please try to clamp the handle of the Roundover Router Bit to the "K" line(as shown in picture 6), otherwise it will be easy to bend the shank.
- Set the bit so the bottom of its concave cutting edge aligns with the router base or router table.
- Test the setup on scrap of the same thickness. Too much bit projection can leave a ridge, or fillet; too little can leave the radius incomplete.
- Adjust the bit as needed and rout the workpiece only after the test profile is satisfactory.
Feed direction, workholding and cut quality
Secure the workpiece and keep the bit clear of it when starting the router. Feed against the bit’s rotation. For outside edges, the Grizzly H7790/H7791 manual specifies counterclockwise feed; for interior holes, it specifies clockwise feed. Avoid a climb cut, where the cutter moves in the same direction as the feed: the router can lunge forward.
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SaleBestseller No. 3
Best Value
Sale
Freud Radius Rounding Over Bit with Perma-Shield Coating and Quadra-Cut Design for Flawless Finish - 2 Cutters, 1/4" Shank Dia., 1/8" Radius, 2-3/16" Length - 34-104
- Flawless Finish with Quadra-Cut Design - Most bits feature Freud's exclusive Quadra-Cut design, using four cutting edges to deliver exceptionally clean and smooth finishes, even in challenging cross-grain applications.
- Customize Profiles for Added Functionality - Swap in a bearing 1/8" smaller in diameter to transform your rounding bit into a beading bit, expanding the range of edge profiles and increasing the utility of each bit.
- Cuts a Wide Range of Materials - Designed to handle hardwood, softwood, plywood, and composite materials with precision, these bits deliver clean, smooth cuts on a variety of woodworking projects.
- Compatible with Multiple Router Types - Ideal for use with CNC routers, hand-held routers, and table-mounted routers, offering flexibility and control for both DIYers and professional woodworkers alike.
- Perma-Shield Coating - Reduces friction and blade drag, protects against resin build-up and corrosion, and ensures smoother, cleaner cuts with less effort.
Rank #4
4PCS Router Bit Set Feanron Router Bits 1/4 inch Shank, Roundover Router Bit Cutting Diameter in 1/8", 1/4", 3/16", 5/16", CNC Router Bits Edging Cutter for Woodworking Forming Molding Profiling
- 1. 1/4 Router Bit Set, radius 1/8", 1/4", 3/16", 5/16", good quality guide bearings provide superior wear resistance
- 2. Industrial-grade C2 carbide router bit set, high -tech special grinding process, smooth cutting, high hardness, high quality
- 3.Different types of connections router bits, such as straight, curved, round or irregular, can bypasses the edges through the edges to make it smoother and appearance
- 4. Widely used applications, suitable for wood, laminate, particleboard, plywood compact panel, acrylic, and etc, change the depth of cutting by use different radius to polish
- 5. Easy to carry, not only home decoration and polishing, but also suitable for light industries
Rank #3
Sale
HILTEX 10109H Top Bearing Roundover Router Bit Set, 4 Pieces, 1/4 Inch Shank, CNC Woodworking Tool, 1/8" 3/16" 1/4" 5/16" Cutting Radius for Round Edging, Cabinet Edges
- DURABLE YG8 TUNGSTEN CARBIDE BLADE, #45 CARBON STEEL BODY: Our round over bits boast a YG8 Tungsten Carbide steel blade to help ensure a sharp, smooth, and clean burr-free wood cut all while balanced on a carefully crafted solid, durable, powder coated, hardened #45 Carbon Steel body so these bits can withstand heavy duty use from high-powered routers and CNC machines at RPM ≤ 16000 over a long period of time.
- CREATE CLEAN BEAUTIFUL ROUNDOVER EDGES: Our rounding over router bits are perfect for cutting beautiful corner round edges in high density urethane (HDU board), laminate, MDF, veneered plywood, and various softwoods and hardwoods whether you are cutting decorative edges in furniture, drawer fronts, cabinet doors, stools or tables or pairing with cove bits (sold separately) to create a smooth classic drop-leaf rule joint, like a folding leaf table
- SAFETY FIRST: Our roundover edging bits are crafted with a quarter-round anti-recoil design to provide high balance and safety without sacrificing smooth clean cutting efficiency. Clear laser etched markings on the shank let you know the minimum length to push into the automatic router or CNC machine to safely operate the core box router bit for best results
- 4 PIECE SET INCLUDES: 1/8” Radius Roundover Bit (3/4” Diameter x 3/8" Cutting Height), 3/16” Radius Corner-round Bit (3/16” Diameter x 3/8" Cutting Height), 1/4” Radius (1” Diameter x 3/8” Cutting Height), 5/16" Radius (1-1/8” Diameter x 1/2” Cutting Height)
- CONVENIENT STORAGE CASES: Each quarter round bit comes in its own clearly labeled miniature plastic case and mount, allowing you to easily carry around or safely store these bullnose corner round-over router bits in any tool chest when not using them
- Make test cuts on scrap before routing the finished piece.
- Use multiple passes as appropriate to reduce chip-out, burning and the chance of the router jerking from your hands.
- Keep hands and clamps positioned so they cannot enter the bit’s path, and maintain control of the workpiece throughout the cut.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
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