The CMT 663.003.11 Spoilboard Surfacing Router Cutter with Insert Knives is a heavy-duty CNC routing tool engineered for rapid material removal across large surface areas while delivering a clean, flat finish. Built on a super strength steel body and armed with replaceable 4-sided inserts in super micrograin carbide, this 3-5/32 in. diameter cutter excels at spoilboard resurfacing, panel flattening, and large-area facing on CNC router machines. Its 3-flute geometry and right-hand rotation make it a go-to solution for woodworking shops and production facilities that process soft and hardwood, MDF, and particle board with consistency and efficiency.

Key Features

• Super strength steel body - provides the rigidity and durability needed to handle aggressive CNC surfacing passes without flex or chatter, resulting in a more consistent bottom-of-cut finish.
• Replaceable 4-sided super micrograin carbide inserts - each insert offers four usable cutting edges, so when one edge dulls you simply rotate to a fresh edge rather than replacing the entire cutter, reducing long-term tooling costs significantly.
• 3-5/32 in. cutting diameter with 3-flute design - covers a wide swath in each pass and delivers balanced chip evacuation, allowing faster feed rates and more efficient material removal over large surface areas.
• 12mm cutting height - accommodates a meaningful depth of engagement, making it practical for both light finishing passes and more substantial surfacing cuts on spoilboards and workpieces.
• 20mm shank diameter - sized for secure, low-vibration seating in CNC router collets or tool holders, helping maintain dimensional accuracy and surface quality across extended production runs.
• 90mm total length - provides adequate clearance for CNC spindle housings while keeping the tool compact enough to minimize runout and maintain cutting precision.
• Right-hand (RH) rotation - compatible with the standard spindle direction of the vast majority of CNC router machines, making setup and integration straightforward.
• Compatible with soft and hardwood, particle board, and MDF - one cutter handles the full range of common sheet goods and solid wood encountered in cabinet, furniture, and fixture production.

Why This Product

• Engineered specifically for CNC spoilboard resurfacing - unlike general-purpose router bits adapted for facing work, this cutter is purpose-built to restore a flat, level spoilboard surface quickly, helping maintain workholding accuracy and part consistency on CNC routers.
• Indexable insert design keeps downtime low - production environments benefit from the ability to rotate or swap carbide inserts at the machine without sending the entire body out for regrinding, keeping the CNC running rather than waiting on sharpening services.
• Wide 3-5/32 in. diameter reduces the number of passes required - covering more surface area per pass means less machine time and wear on the spoilboard itself, which translates directly to higher throughput for panel flattening and large-format surfacing jobs.
• Broad material compatibility across soft and hardwood, MDF, and particle board - shops working with mixed material types do not need to change cutters between jobs, streamlining workflow and simplifying tool inventory management.

Specifications

• Manufacturer Part Number: 663.003.11
• Brand: CMT Orange Tools
• Diameter: 3-5/32 in.
• Cutting Height: 12mm
• Total Length: 90mm
• Shank: 20mm
• Number of Teeth: 3
• Material: HW (Hardmetal / Carbide)
• Rotation: Right-Hand (RH)
• Product Type: Spoilboard Surfacing Router Cutter with Insert Knives

Approved Applications

• CNC Spoilboard Surfacing
• Large Surface Facing and Panel Flattening
• Fast Material Removal Over Wide Surface Areas
• Soft and Hardwood Surfacing
• Particle Board and MDF Facing