The CMT 880.541.11 Solid Surface Rounding Over Bowl Bit is purpose-built for rounding over and trimming countertop edges after an undermount bowl or sink has been installed. With a 2 1/8 in. cutting diameter, a 1/2 in. radius, and an 18 deg. angle, this carbide-tipped router bit delivers clean, finished profiles on solid surface materials such as Corian, Wilsonart, and Gibraltar. Designed for use with hand-held routers, it features a non-marring Delrin bearing that protects finished edges and surrounding surfaces during the profiling pass. When paired with the CMT 8/980.551.11 bevel cutter, it enables a flush cut-out between the countertop and an installed undermount bowl - making it an essential part of a complete solid surface countertop finishing workflow.

Key Features

• 18 deg. angle with 1/2 in. radius profile - produces a smooth, elegant rounding over edge that blends the countertop seamlessly with the bowl cutout, reducing visible seam lines on finished installations.
• 2 1/8 in. cutting diameter - provides the reach needed to profile countertop edges efficiently in a single pass, saving time on solid surface countertop finishing work.
• Non-marring Delrin bearing - glides along finished edges and surfaces without scratching or scuffing, protecting your workpiece throughout the cut.
• Right-hand (RH) rotation - compatible with standard hand-held routers for straightforward setup and safe, predictable operation.
• Hardwood (HW) carbide construction - resists wear when cutting through solid surface materials, extending the working life of the bit over repeated use.
• 2-flute design - balances cutting speed with surface quality, delivering smooth profiles on solid surface countertop materials with minimal tearout.
• 1/2 in. shank - fits standard 1/2 in. router collets, providing a secure, stable connection that reduces vibration and improves cut accuracy.
• Compatible with CMT 8/980.551.11 bevel cutter - these two bits work together for a complete flush cut-out between the countertop surface and the installed undermount bowl, giving a professional finished result.

Why This Product

• Engineered specifically for undermount bowl installation - where general-purpose roundover bits leave gaps or uneven edges, this bit's 18 deg. angle and 1/2 in. radius are matched to the geometry of undermount bowl cutouts, making it the right tool for professional countertop finishing.
• Protects finished surfaces with a non-marring Delrin bearing - on solid surface countertops where scratches are highly visible, routing with a bearing that cannot mar the surface means the workpiece stays pristine throughout the profiling process.
• Designed for hand-held router use - gives the installer flexibility to work in place on installed countertops, eliminating the need to remove the countertop for a stationary router table setup.
• Part of a coordinated two-bit system - combining this rounding over bowl bit with the CMT 8/980.551.11 bevel cutter covers both the edge profile and the flush cut-out in one consistent workflow, reducing setup time and ensuring matched results.

Specifications

• Manufacturer Part Number: 880.541.11
• Brand: CMT Orange Tools
• Diameter: 2 1/8 in.
• Radius: 1/2 in.
• Angle: 18 deg.
• Shank: 1/2 in.
• Cutting Height: 1 in.
• Total Length: 3 5/64 in.
• Maximum Thickness: 3/4 in.
• Number of Teeth: 2
• Material: HW (Hardwood Carbide)
• Rotation: Right-hand (RH)

Approved Applications

• Rounding over countertop edges after undermount bowl installation
• Trimming solid surface countertop edges around bowl cutouts
• Flush cut-out profiling between countertop and installed undermount bowl (when used with CMT 8/980.551.11 bevel cutter)
• Edge profiling on solid surface materials such as Corian, Wilsonart, and Gibraltar