Product Description
The CMT 811.595.11 Straight Bit Short Series is a precision-ground, double-edged carbide router bit designed for clean, accurate straight cuts in a wide range of wood-based and composite materials. Built from special fatigue-proof steel and micrograin carbide, this 3/8 in. diameter bit with a 1/2 in. shank is engineered to handle demanding production environments - delivering consistent groove, dado, rabbet, and mortise results whether you are routing by hand, at the table, or on a CNC machine.
Key Features
- Micrograin Carbide Cutting Edges - harder and denser than standard carbide, micrograin construction resists chipping and maintains sharpness longer through heavy production workloads.
- Fatigue-Proof Steel Body - the specially formulated steel shank and body resist stress fractures under repetitive loading, giving the bit a longer service life in high-volume routing applications.
- CMT Orange Non-Stick PTFE Coating - the trademark orange surface treatment repels resin, pitch, and other residue buildup, reducing friction, limiting heat generation, and making cleanup faster between cuts.
- Double-Edged (2-Flute) Design - two cutting edges distribute the workload evenly, producing smoother cut surfaces and better chip evacuation compared to single-flute alternatives.
- Right-Hand Rotation - compatible with the standard rotation direction of handheld routers, router tables, and CNC routing machines without requiring spindle modification.
- Strict Quality Testing for Tolerance, Balance, and Concentricity - every bit is individually verified to meet tight manufacturing standards, ensuring repeatable cut accuracy and vibration-free performance run after run.
- 1/2 in. Shank Diameter - the larger shank reduces flex and chatter during cuts, allowing more aggressive feed rates and improved surface finish in dense materials like plywood and composites.
Why This Product
- The short-series geometry - 2 5/8 in. total length with a 1 in. cutting height - keeps the bit closer to the collet, minimizing deflection and producing straighter, more precise grooves and dados even in harder hardwoods and dense composites.
- The combination of micrograin carbide and a fatigue-proof steel body means this bit is suited for industrial-scale production where bits are run continuously through plywood, MDF, natural woods, and other demanding materials without frequent tool changes.
- The orange PTFE non-stick coating addresses one of the most common productivity problems in routing - resin and pitch adhesion - keeping the cutting edges clear and the bit performing at full efficiency throughout long production runs.
- Every unit passes strict quality tests for cutting tolerance, balance, and concentricity, meaning you get predictable, repeatable results whether you are cutting a single mortise or running hundreds of identical dadoes in a production setting.
Specifications
- Manufacturer Part Number: 811.595.11
- Brand: CMT Orange Tools
- Diameter: 3/8 in.
- Cutting Height: 1 in.
- Total Length: 2 5/8 in.
- Shank Diameter: 1/2 in.
- Number of Teeth: 2
- Material: Micrograin Carbide (HW)
- Rotation: Right-Hand (RH)
- Product Type: Straight Bit Short Series
Approved Applications
- Straight cuts including dadoes, grooves, and rabbets
- Mortising
- Template routing
- Plywood joinery
- Industrial and production-scale routing in natural wood, plywood, composites, and similar panel materials
Frequently Asked Questions
What materials can this straight router bit cut?
This bit is designed to work with a variety of materials including solid hardwoods, softwoods, plywood, composites, and other wood-based panel products. The micrograin carbide cutting edges and fatigue-proof steel construction are suited for the demands of both light woodworking and industrial-scale production.
Why is a short-series bit preferred for dado and groove work?
Short-series bits have a reduced total length - in this case 2 5/8 in. overall - which keeps more of the bit inside the collet. This shorter overhang reduces flex and lateral deflection during the cut, resulting in tighter tolerances and cleaner groove walls, especially in denser materials like hardwoods and composites.
What is the purpose of the orange PTFE coating on CMT bits?
The non-stick PTFE surface treatment helps prevent resin, pitch, and other wood residues from bonding to the bit body and cutting edges. By keeping the surfaces cleaner during use, the coating reduces friction-related heat buildup and extends the effective cutting life of the bit between sharpenings or replacements.
Is this bit compatible with both handheld routers and router tables?
Yes. The 1/2 in. shank and right-hand rotation of this bit make it compatible with handheld routers, router tables, and CNC routing machines that use standard 1/2 in. collets with right-hand spindle rotation. The larger 1/2 in. shank also helps reduce vibration compared to smaller shank sizes, contributing to a smoother cut and longer bearing life in the router.
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