CMT Solid Surface Sink and Trim Bit - 7/8" x 1", 10 deg. Angle, 1/2" Shank is a precision router bit engineered specifically for solid surface countertop fabrication. Designed to trim sink cut-outs flush with the bowl in a two-stage process, this right-hand rotation bit features a 10 deg. tapered angle and Delrin bearings matched to the slope of a bowl's side - making it the right tool for clean, professional results when working with Corian, Wilsonart, Gibraltar, and similar solid surface materials. Built from super micrograin carbide for long cutting life, this bit handles the demanding tolerances that solid surface sink mounting requires.

Key Features

• Tapered Delrin bearing at 10 deg. - the bearing angle is matched to the slope of the sink bowl's side, allowing the bit to follow the bowl contour precisely and produce a flush, tight fit between counter and sink without guesswork.
• Two-stage sink trimming capability - this over-hang style bit is used as the first pass to clean the cut-out edge and leave a slight over-hang on the underside of the counter, setting up the second flush-trim pass for a complete, accurate operation.
• Super micrograin carbide construction (HW material grade) - a denser, harder carbide formulation guarantees longer cutting life and maintains a sharp edge through repeated passes on abrasive solid surface materials.
• 2-flute design - dual cutting edges improve chip evacuation and produce a smoother cut surface, reducing the need for hand finishing after routing.
• 7/8" cutting diameter x 1" cutting height - sized to handle the full depth of standard solid surface countertop material in a single pass, minimizing the number of setups required.
• 1/2" shank - the larger shank diameter reduces vibration and deflection compared to 1/4" shanks, improving cut accuracy and bit stability during sink trimming operations.
• Right-hand rotation - compatible with standard handheld routers and router tables, allowing immediate use without any special tooling or adapters.
• 3-1/16" total length - provides adequate reach for accessing the underside geometry of a sink cut-out while maintaining bit rigidity.

Why This Product

• Purpose-built for solid surface sink installation - generic flush-trim bits lack the tapered Delrin bearing needed to follow a bowl's angled side wall. This bit is specifically designed for that application, eliminating improvised workarounds that can result in gaps or uneven fits.
• Super micrograin carbide extends bit life on abrasive materials - solid surface materials like Corian are harder on tooling than wood. The high-grade carbide used in this bit resists dulling faster than standard carbide, reducing replacement frequency over the course of a project or production run.
• The 10 deg. taper matches the bowl slope precisely - because the bearing angle is engineered to correspond to the bowl geometry, the cut-out trim is flush and consistent around the full perimeter of the sink, not just at tangent points.
• 1/2" shank fits professional-grade routers - larger shank diameter means less flex under load, which is critical when trimming solid surface material where a slight deviation produces a visible gap at the sink line.

Specifications

• Manufacturer Part Number: 880.572.11
• Brand: CMT Orange Tools
• Diameter: 7/8"
• Cutting Height: 1"
• Total Length: 3-1/16"
• Shank: 1/2"
• Angle: 10 deg.
• Number of Teeth: 2
• Rotation: Right-hand (RH)
• Material: HW (Super Micrograin Carbide)

Approved Applications

• Solid surface sink cut-out trimming and flush fitting
• Over-hang trimming on solid surface countertop edges
• Two-stage sink mounting operations on Corian, Wilsonart, Gibraltar, and comparable solid surface materials
• Bowl edge profiling and countertop sink mounting preparation