The CMT Xtreme Spoilboard Surfacing Router Cutter with Insert Knives is a heavy-duty CNC surfacing bit engineered for precision flattening, panel leveling, and large-surface facing on a wide range of wood-based materials. Built on a super-strength steel body with a 6 + 3 cutting edge configuration, this 2 in. diameter planing cutter delivers smooth, consistent results across solid hardwood, softwood, MDF, plywood, chipboard, and laminates. The replaceable carbide insert knife design keeps long-term operating costs low while maintaining sharp, reliable performance across demanding CNC router and router table applications.

Key Features

• Super-strength steel body with 6 + 3 cutting edges (Z6+V3) - the combination of six primary cutting edges plus three secondary insert knives distributes cutting load evenly, resulting in a smoother surface finish and reduced vibration during spoilboard surfacing passes.
• Replaceable 4-sided carbide insert knives - each insert can be rotated to a fresh edge up to four times before replacement, extending usable tool life and lowering the cost per hour of CNC surfacing compared to solid carbide alternatives.
• 2 in. cutting diameter with 1 in. cutting height - wide coverage per pass means fewer passes are needed to flatten a full spoilboard or panel, saving setup time and improving throughput on CNC routers and router tables.
• 1/2 in. shank - the standard 1/2 in. shank is compatible with a broad range of CNC router collets and router table setups, making this cutter a versatile fit for existing equipment without adapters.
• Right-hand (RH) rotation - matched to the standard spindle direction of CNC routers and table shapers, so the cutter runs true without requiring any special setup or reverse-collet configurations.
• 2 1/2 in. total length - a compact overall profile keeps the cutter close to the collet for improved rigidity and reduced deflection during heavy surfacing cuts.
• Hardwood (HW) grade carbide material - the insert knife carbide grade is selected for hardwood-class performance, meaning it handles dense solid hardwoods as well as abrasive engineered panels like MDF and laminates without premature edge breakdown.

Why This Product

• Shops that run CNC spoilboard surfacing regularly benefit from the rotating 4-sided insert knife system - instead of replacing the entire cutter when an edge dulls, operators simply index or swap the insert, keeping material costs predictable and downtime minimal.
• The 6 + 3 cutting edge geometry means this cutter handles a broader range of materials - from soft pine to dense hardwood and abrasive laminates - without needing to switch to a different bit, making it a practical single-tool solution for mixed-material CNC workflows.
• With a 2 in. cutting diameter and 1 in. cutting height, this router cutter covers meaningful surface area per pass, making it well-suited to flattening full CNC spoilboards, leveling glued-up panels, or surfacing large workpieces in production environments.
• Compatibility with table shapers, CNC router machines, and router tables gives this cutter flexibility across different shop setups - whether used in a standalone router table or mounted in a professional CNC router spindle, the 1/2 in. shank and RH rotation are industry-standard fits.

Specifications

• Manufacturer Part Number: 663.501.11
• Brand: CMT Orange Tools
• Product Type: Spoilboard Surfacing Router Cutter with Insert Knives
• Diameter: 2 in.
• Cutting Height: 1 in.
• Total Length: 2 1/2 in.
• Shank: 1/2 in.
• Number of Teeth: 6 + 3
• Material: HW (Hardwood-grade carbide)
• Rotation: Right-hand (RH)

Approved Applications

• CNC spoilboard surfacing
• Large surface facing
• Panel flattening
• Compatible materials - solid hardwood, softwood, chipboard, MDF, plywood, laminates
• Compatible machines - CNC router machines, router tables, table shapers