Product Description
The CMT Contractor Roundover and Beading Bit delivers a clean 5/8" radius profile for softening sharp corners, creating decorative bead edges, and producing refined furniture-quality edge work. Designed for use in handheld routers, router tables, and CNC routing machines, this right-hand rotation bit combines carbide-tipped cutting edges with an anti-kickback body to give woodworkers consistent, controlled results on hardwood, softwood, plywood, MDF, and more. Whether you are profiling table edges, cabinet doors, or drop-leaf joinery, this 1/4" shank bit is a versatile addition to any contractor or hobbyist routing setup.
Key Features
- Roundover and Beading Profile - produces a smooth 5/8" radius roundover edge or, with the bead guide in position, adds a classic bead detail that elevates furniture and millwork projects beyond a plain eased edge.
- Two Carbide-Tipped Cutting Edges - dual HW (carbide) cutters shear material cleanly on each pass, reducing tearout and delivering a finish-ready surface with fewer sanding steps.
- Anti-Kickback Body Design - limits the depth of each bite the bit can take, reducing the chance of sudden kickback and keeping the cut accurate and safe, especially on router tables.
- Bottom Bearing Included - the integrated bottom bearing rides along the workpiece edge to maintain a consistent cutting depth without the need for a separate fence, making edge profiling fast and repeatable.
- Heat-Treated Shank and Body - the hardened steel shank and body resist flexing and wear under sustained use, helping the bit hold its geometry cut after cut for reliable long-term performance.
- 1/4" Shank Compatibility - fits the 1/4" collets found on a wide range of handheld routers and router tables, giving this bit broad machine compatibility without adapters.
- Drop-Leaf Table Pairing - when combined with a matching cove bit, this roundover and beading profile creates the complementary halves of a drop-leaf table joint, expanding its usefulness well beyond basic edge softening.
Why This Product
- The dual-purpose roundover and beading profile means one bit handles two decorative outcomes - a plain radius edge for modern furniture or a beaded detail for traditional millwork - without swapping tooling mid-project.
- The anti-kickback body design addresses one of the most common router safety concerns, making this bit a practical choice for router table setups where feed rate and bit exposure are harder to control by hand.
- At a 1 3/4" cutting diameter with a 7/8" cutting height, this bit is sized to handle substantial edge profiles in a single pass, which saves time on thicker stock compared to taking multiple light passes with a smaller bit.
- The included bottom bearing eliminates the need for a separate fence when running freehand profiles, letting you work directly from the workpiece edge for accurate, consistent results on curved or straight stock alike.
Specifications
- Manufacturer Part Number: 83808
- Brand: CMT Orange Tools
- Diameter: 1 3/4"
- Radius: 5/8"
- Cutting Height: 7/8"
- Total Length: 2 5/8"
- Shank: 1/4"
- Number of Cutting Edges: 2
- Cutting Material: HW (Carbide-Tipped)
- Rotation: Right-Hand (RH)
- Bottom Bearing: Included
Approved Applications
- Rounding over sharp workpiece edges on furniture, cabinets, and trim
- Adding a decorative bead profile to table edges, shelf fronts, and door frames
- Creating drop-leaf table joints when paired with a complementary cove bit
- Edge profiling on solid hardwood and softwood
- Edge finishing on plywood, MDF, chipboard, and similar sheet goods
What's Included
- 1x CMT Contractor Roundover and Beading Bit (1 3/4" diameter, 5/8" radius, 1/4" shank)
- 1x Bottom bearing
Frequently Asked Questions
Can this bit create both a plain roundover and a beaded edge profile?
Yes. This bit is a combination roundover and beading bit. Depending on how the bit is set up and positioned relative to the workpiece surface, it can produce either a clean 5/8" radius roundover or a decorative bead profile along the edge, giving you two distinct looks from a single bit.
What routers is the 1/4" shank compatible with?
This bit's 1/4" shank fits any handheld router, router table, or CNC routing machine equipped with a 1/4" collet. Most compact and full-size routers accept 1/4" shank bits, making this one of the most widely compatible shank sizes available.
How does this bit pair with a cove bit for drop-leaf table construction?
A drop-leaf table joint requires two complementary profiles - a roundover on one leaf and a matching cove on the other - so the leaves nest together when the table is folded down. This roundover and beading bit creates one half of that joint. When used alongside a compatible cove bit with the same radius, the two profiles fit together to form the traditional drop-leaf hinge joint.
What is the purpose of the anti-kickback design on this bit?
The anti-kickback body limits the maximum amount of material the bit can remove in a single rotation. This controls the depth of cut and reduces the risk of the router bit grabbing the workpiece suddenly - a concern particularly relevant on router tables where the bit is exposed and the workpiece is fed by hand. It also contributes to more consistent cut quality by preventing overly aggressive passes.
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