The CMT 881.512.11 Solid Surface Drainboard Bit is a precision-ground router bit engineered specifically for cutting decorative and functional drainboard groove patterns into solid surface countertops. With a 1 in. cutting diameter, 1/2 in. cutting height, and a 1/8 in. radius profile, this bit delivers clean, repeatable results when shaping custom drainboard channels in countertop fabrication work. Designed for use with hand-held portable routers, it accepts a standard 1/2 in. shank and rotates right-hand for compatibility with conventional router setups. Whether you are a countertop fabricator crafting a custom kitchen workspace or a shop professional adding functional water-channeling detail to a solid surface installation, this CMT drainboard bit provides the profile geometry needed to get the job done accurately.

Key Features

• 1 in. cutting diameter with 1/8 in. radius profile - produces a precisely shaped drainboard groove that channels water efficiently along solid surface countertops, reducing the chance of pooling near the sink area.
• 1/2 in. cutting height - allows adequate groove depth in a single pass or controlled routing sequence, giving fabricators the material removal capacity needed for clean drainboard channels.
• 2-flute carbide (HW) construction - hard metal cutting edges stay sharp longer through solid surface material, delivering smoother groove walls and reducing the need for secondary sanding or finishing.
• 1/2 in. shank - fits the most common router collet size, providing secure chuck engagement and reduced vibration during the cut for more accurate, consistent groove profiles.
• Right-hand (RH) rotation - compatible with standard handheld portable routers, making this bit straightforward to integrate into existing countertop fabrication setups without special tooling.
• 2-3/4 in. total length - compact overall length keeps the bit stable during routing passes and minimizes deflection, which is important when cutting uniform groove patterns across a full countertop surface.
• Purpose-built for solid surface drainboard work - the profile geometry is matched to the requirements of solid surface material, so the resulting grooves are consistent in shape and free of tear-out common with general-purpose bits.

Why This Product

• Countertop fabricators who need a reliable, repeatable drainboard groove profile in solid surface material will find this bit delivers the exact 1/8 in. radius and 1 in. diameter geometry required - without adapting a general-purpose profile that may not produce the correct channel shape.
• The 2-flute hard metal carbide construction means cutting edges hold up through the density of solid surface material, reducing tool changes mid-project and maintaining groove quality from the first pass to the last.
• With a 1/2 in. shank and compatibility with hand-held portable routers, this bit integrates directly into the portable router setups most countertop shops already own, keeping equipment investment low.
• At 2-3/4 in. total length, the bit remains stable and minimizes chatter during routing, which directly supports the kind of clean, professional groove lines that matter in finished countertop installations.

Specifications

• Manufacturer Part Number: 881.512.11
• Brand: CMT Orange Tools
• Diameter: 1 in.
• Cutting Height: 1/2 in.
• Total Length: 2-3/4 in.
• Radius: 1/8 in.
• Shank: 1/2 in.
• Number of Teeth: 2
• Material: HW (Hard Metal Carbide)
• Rotation: Right-hand (RH)

Approved Applications

• Drainboard groove routing in solid surface countertops
• Custom drainboard pattern creation
• Countertop fabrication with hand-held portable routers