CMT Diamond Compression Router Bit - 1/2 in. Diameter, 1/2 in. Shank is a precision-engineered polycrystalline diamond (DP) router cutter built for demanding CNC applications involving composite panels and fiber-reinforced materials. Featuring a compression spiral geometry with a 1+1 tooth configuration (3DP + 1HW cutting edges), this right-hand rotation bit cuts upward and downward simultaneously, producing chip-free surfaces on both faces of the workpiece in a single pass. With a 1 in. cutting height and 3 in. total length on a 1/2 in. shank, this CMT router bit delivers the rigidity and edge retention needed for heavy-duty CNC routing work.

Key Features

• Diamond (DP) Cutting Edge - polycrystalline diamond material provides exceptional hardness and wear resistance, extending tool life significantly when routing abrasive composite panels, fiberglass, carbon fiber, and solid surface materials where standard carbide would wear prematurely.
• 1+1 Compression Geometry (3DP + 1HW) - the compression spiral geometry cuts both the top and bottom faces of the workpiece cleanly in one pass, eliminating delamination and tear-out on composite panels and fiber-reinforced sheets for finish-quality edges without secondary processing.
• Super Strength Steel Body - the router bit body is manufactured from super strength steel, providing the rigidity and stability required to withstand the high forces generated during CNC routing of hard, abrasive composite materials.
• 1/2 in. Shank Diameter - the full 1/2 in. shank provides a secure, low-vibration fit in CNC machine collets, reducing chatter and helping maintain dimensional accuracy across long production runs.
• 1 in. Cutting Height with 3 in. Total Length - the 1 in. cutting height accommodates standard composite panel thicknesses, while the 3 in. total length offers clearance for proper chip evacuation and unobstructed tool path routing.
• Right-Hand (RH) Rotation - designed for standard right-hand rotation spindles found on the majority of CNC routing machines and router tables, ensuring straightforward compatibility with common setups.

Why This Product

• The polycrystalline diamond (DP) cutting edges make this bit the right choice for routing abrasive materials like fiberglass, carbon fiber, and composite panels - applications where standard carbide bits wear quickly and require frequent replacement, driving up production costs.
• The compression spiral geometry solves one of the most common problems in composite panel routing: face delamination. By cutting upward on one side and downward on the other simultaneously, it produces clean, chip-free surfaces on both faces without additional finishing steps.
• The 1+1 tooth configuration (3DP + 1HW edges) combines diamond durability with precise cutting geometry, balancing aggressive material removal with surface quality - making this bit well suited for production-volume CNC work on demanding substrates.
• With a 1/2 in. shank and super strength steel body construction, this CMT compression bit is engineered specifically for CNC routing machines where rigidity and concentricity directly affect cut quality and throughput consistency.

Specifications

• Manufacturer Part Number: 140.127.61
• Brand: CMT Orange Tools
• Product Type: Diamond Compression Router Bit
• Material: DP (Polycrystalline Diamond)
• Diameter: 1/2 in.
• Cutting Height: 1 in.
• Total Length: 3 in.
• Shank: 1/2 in.
• Number of Teeth: 1 + 1
• Rotation: Right-Hand (RH)

Approved Applications

• CNC routing of composite panels
• Cutting fiber-reinforced materials
• Routing fiberglass sheets and components
• Carbon fiber panel cutting and trimming
• Routing Corian and solid surface materials
• Heavy-duty CNC production routing