The CMT 663.004.11 Spoilboard Surfacing Router Cutter with Insert Knives is a professional-grade CNC router bit engineered for fast, large-surface material removal with a smooth, refined bottom finish. Built on a super strength steel body and fitted with 4-sided micrograin carbide insert knives, this 2-3/8 in. diameter cutter is purpose-built for CNC spoilboard resurfacing, panel flattening, and facing operations across a wide range of wood-based materials. Its replaceable insert design delivers long-lasting, economical performance for production CNC routing environments where downtime and tooling costs matter.

Key Features

• Super strength steel body - provides a rigid, durable platform that resists flex under heavy CNC surfacing loads, maintaining accuracy across wide surface passes.
• 4-sided micrograin carbide insert knives - each insert offers four usable cutting edges, so when one edge dulls you simply rotate to a fresh edge, dramatically reducing cost-per-cut and extending the productive life of the tooling.
• 2-3/8 in. cutting diameter with 3-tooth configuration - covers a wide swath per pass and balances material removal speed with a clean, improved finish at the bottom of the cut, reducing the number of passes needed to surface a spoilboard.
• 12mm cutting height - allows meaningful depth of engagement during surfacing passes, making it effective for leveling uneven spoilboards or flattening rough panel stock in fewer operations.
• Right-hand rotation, 12mm shank - compatible with standard CNC router collets and spindles, enabling straightforward installation on most production CNC router machines.
• Suited for soft and hardwood, particle board, and MDF - one cutter handles the full range of common CNC workpiece and spoilboard materials, eliminating the need to swap tooling between jobs.

Why This Product

• Spoilboard resurfacing demands a cutter that can remove material quickly over a large area without leaving a rough or ridged surface - this bit's wide 2-3/8 in. diameter and 3-flute geometry deliver both speed and a refined bottom finish in a single pass sequence.
• The replaceable 4-sided insert design means you never have to stop production to sharpen or replace an entire bit body - rotating to a fresh cutting edge takes seconds, keeping CNC operations running with minimal interruption.
• Compatibility with soft and hardwood, particle board, and MDF means this cutter works across virtually every spoilboard and workpiece material commonly used in CNC routing, making it a versatile single-tool solution for surfacing tasks.
• The 12mm shank fits standard CNC router spindle collets, and the right-hand rotation matches the most common CNC spindle direction, so integration into an existing CNC setup requires no special adapters or modifications.

Specifications

• Manufacturer Part Number: 663.004.11
• Brand: CMT Orange Tools
• Product Type: Spoilboard Surfacing Router Cutter with Insert Knives
• Diameter: 2-3/8 in.
• Cutting Height: 12mm
• Total Length: 80mm
• Shank: 12mm
• Number of Teeth: 3
• Insert Material: Super micrograin carbide (HW)
• Body Material: Super strength steel
• Rotation: Right-hand (RH)

Approved Applications

• CNC spoilboard surfacing and resurfacing
• Large surface area material removal and facing
• Panel flattening on CNC router machines
• Surfacing soft and hardwood stock
• Surfacing particle board and MDF panels