CMT Spoilboard Surfacing Router Cutter with Insert Knives - 1 1/2 in. Diameter by CMT is a precision-engineered CNC insert cutter designed for fast, efficient material removal across large surface areas - delivering an improved finish at the bottom of the cut. Built on a super strength steel body and fitted with 4-sided micrograin carbide insert knives, this spoilboard flattening bit is the go-to solution for CNC router operators surfacing soft and hardwood, MDF, and particle board with consistent, repeatable results.

Key Features

• Super strength steel body - provides a rigid, vibration-resistant platform that maintains cutter accuracy pass after pass, reducing deflection during aggressive CNC surfacing runs.
• 4-sided super micrograin carbide insert knives - each insert has four usable cutting edges, so when one edge dulls you simply rotate to a fresh edge rather than replacing the entire bit, lowering long-term tooling costs significantly.
• 3-tooth configuration with 1 1/2 in. cutting diameter - three evenly spaced cutting teeth distribute cutting load across the full 1 1/2 in. diameter, enabling fast material removal over a large surface area while maintaining a smooth, flat finish.
• 12mm shank diameter - mates securely with standard CNC router collets sized for metric tooling, providing a stable, low-runout connection at the spindle.
• 12mm cutting height - allows for meaningful depth-of-cut capacity in a single pass, reducing the number of passes needed to flatten a spoilboard or face a wide panel.
• Right-hand rotation - compatible with conventional CNC router spindle direction, simplifying tool selection and setup for standard CNC routing operations.
• Compatible with soft and hardwood, particle board, and MDF - a single cutter handles the full range of materials commonly encountered in CNC panel processing and cabinetmaking workflows.

Why This Product

• The replaceable 4-sided carbide insert design solves the cost problem of traditional solid carbide spoilboard bits - instead of discarding the entire cutter when an edge wears, you rotate or replace only the individual insert, dramatically extending the useful life of the tool body.
• The 1 1/2 in. cutting diameter and 3-tooth geometry are specifically optimized for CNC spoilboard surfacing and large-area panel flattening, covering more ground per spindle revolution compared to narrower profiling bits and leaving a cleaner, more uniform surface.
• With super micrograin carbide inserts and a super strength steel body, this cutter is built to handle the demands of repeated CNC surfacing cycles across soft and hardwood, MDF, and particle board without the rapid edge degradation common in lower-grade insert tooling.
• The 60mm total length and 12mm shank keep the cutter compact and well-balanced in the spindle, minimizing vibration and chatter that can cause surface irregularities during high-feed CNC facing operations.

Specifications

• Manufacturer Part Number: 663.005.11
• Brand: CMT Orange Tools
• Product Type: Spoilboard Surfacing Router Cutter with Insert Knives
• Diameter: 1 1/2 in.
• Cutting Height: 12mm
• Total Length: 60mm
• Shank Diameter: 12mm
• Number of Teeth: 3
• Rotation: Right-hand (RH)
• Insert Material: Super Micrograin Carbide (HW)
• Body Material: Super Strength Steel

Approved Applications

• CNC Spoilboard Surfacing
• Large Surface Facing and Flattening
• Panel Facing on CNC Router Machines
• Soft and Hardwood Surfacing
• Particle Board and MDF Facing