The CMT Solid Carbide Upcut Spiral Bit - 1/2" x 2" x 4" with 1/2" Shank is a professional-grade routing tool engineered from a special super-micrograin carbide formulation that produces and holds a keen cutting edge for demanding CNC and handheld router applications. Featuring a low-angle upcut spiral geometry, this two-flute bit shears wood cleanly, ejects chips upward for efficient clearing in deep slots and pockets, and runs cooler than conventional spiral bits - giving edges a longer service life. Whether you are profiling solid hardwood, machining MDF, or cutting through-slots in plywood and laminates, this 1/2" diameter solid carbide spiral bit delivers consistent, repeatable results in production and shop environments alike.

Key Features

• Super-Micrograin Solid Carbide Construction - the entire bit is manufactured from a special super-micrograin carbide formulation that produces and holds a keen cutting edge, providing superior wear resistance and allowing more resharpenings compared to carbide-tipped alternatives, which lowers long-term tooling cost.
• Low-Angle Upcut Spiral Geometry - the new low-angle spiral is designed specifically to shear wood cleanly rather than tear it, producing the cleanest possible finish on the bottom face of the cut and reducing tearout in solid wood, plywood, and sheet goods.
• Efficient Chip Ejection - the upcut helix pulls chips up and out of the cut continuously, preventing chip packing in deep pockets and through-slots, reducing heat buildup at the cutting edge, and helping the tool run cooler for extended edge life.
• 2" Cutting Height - the generous 2" depth of cut allows full-depth passes in thick stock and multi-pass deep pocket routing without requiring a longer, less rigid bit, maintaining accuracy and surface quality throughout the cut.
• 1/2" Shank Diameter - the 1/2" shank provides maximum rigidity and minimal runout when seated in a 1/2" collet on a router table, handheld router, or CNC spindle, reducing vibration and improving cut quality at higher feed rates.
• Right-Hand Rotation (RH) - compatible with the standard right-hand spindle direction of virtually all routers and CNC routing machines, ensuring straightforward installation with no spindle reconfiguration required.
• 2-Flute Design - two cutting edges balance chip load per flute, allowing higher feed rates while maintaining a smooth surface finish, reducing cycle time in production routing applications.

Why This Product

• The special super-micrograin carbide formulation keeps edges sharper longer and runs cooler than conventional carbide spiral bits - making this an efficient choice for high-volume CNC routing or extended production runs where edge longevity directly affects output quality.
• The low-angle upcut spiral was designed specifically to shear wood cleanly, which means less sanding and secondary finishing work on the bottom face of cuts in solid hardwood, plywood, MDF, and laminate materials.
• With a 2" cutting height on a 4" overall length, this bit handles thick stock in a single setup - eliminating the need to flip workpieces or use multiple bits to complete a full-depth cut in most common panel and lumber thicknesses.
• The 1/2" shank and 1/2" diameter combination makes this bit a direct fit for a wide range of router tables, handheld routers, and CNC spindles equipped with 1/2" collets, reducing setup time and avoiding the need for reducer sleeves.

Specifications

• Manufacturer Part Number: 191.507.11
• Brand: CMT Orange Tools
• Product Type: Solid Carbide Upcut Spiral Router Bit
• Diameter: 1/2"
• Cutting Height: 2"
• Total Length: 4"
• Shank Diameter: 1/2"
• Number of Teeth: 2
• Material: Solid Carbide (HWM super-micrograin formulation)
• Rotation: Right-Hand (RH)

Approved Applications

• CNC Routing
• Through-Cuts
• Deep Pocket Routing
• Chip Evacuation Routing in Deep Slots
• Router Table Operations
• Handheld Router Cuts
• Solid Hardwood Profiling and Machining
• Softwood, Plywood, MDF, and Chipboard Cutting
• Laminate, Melamine, and Plastic Routing