Product Description
CMT Solid Carbide Straight Bit Short Series - 5/16" Diameter, 1/4" Shank is a precision-ground routing bit engineered for clean, accurate straight cuts in a wide range of wood-based and composite materials. Built from micrograin solid carbide and protected by CMT's signature orange non-stick coating, this short-series bit is well suited for production routing, joinery work, dadoes, grooves, and mortising on handheld routers, router tables, and CNC machines alike. Its compact 2" total length and 3/4" cutting height make it an efficient choice when working in tighter clearances where a full-length bit would be excessive.
Key Features
- Micrograin Solid Carbide Construction - the carbide material is processed to resist fatigue and withstand heavy, repetitive production workloads, giving the bit a longer usable cutting life than standard high-speed steel alternatives.
- Double-Edged 2-Flute Geometry - two cutting edges work together to produce cleaner, smoother cuts with each pass, reducing the need for secondary sanding or cleanup on dadoes, grooves, and rabbet joints.
- Orange Non-Stick PTFE Coating - CMT's trademark surface treatment repels resin, pitch, and other residue buildup, which helps keep the bit running cooler, reduces friction drag, and makes cleaning between uses faster.
- Short Series Profile - the reduced overall length of 2" and 3/4" cutting height improves rigidity and minimizes deflection during cutting, delivering tighter tolerances compared to longer bit profiles under similar feed pressure.
- Right-Hand Rotation - matched to standard router spindle direction, ensuring immediate compatibility with conventional handheld and table-mounted routers as well as CNC routing equipment.
- Strict Quality Testing for Balance and Concentricity - every bit is tested for cutting tolerance, balance, and concentricity before leaving production, which translates to vibration-free operation and consistent cut quality across extended use.
- FATIGUE-PROOF Steel Body - the shank and body are formed from specially formulated fatigue-proof steel, reducing the risk of stress fractures or failure under sustained high-load routing conditions.
Why This Product
- The micrograin solid carbide construction and non-stick PTFE coating work together to handle demanding production volumes in plywood, composites, and natural woods without frequent bit changes or cleaning interruptions - making this a practical choice for shop efficiency.
- The short series design limits deflection and flex during cutting, which is especially useful when routing narrow dadoes or precise grooves where dimensional accuracy across the full cut width matters.
- With a 1/4" shank, this bit fits a broad range of compact and full-size routers, meaning it integrates immediately into most existing setups without adapters or collet changes.
- Every unit undergoes quality testing for balance and concentricity, so users running repetitive CNC or template routing tasks can rely on consistent results without recalibrating between bits of the same model.
Specifications
- Manufacturer Part Number: 811.080.11
- Brand: CMT Orange Tools
- Diameter: 5/16"
- Cutting Height: 3/4"
- Total Length: 2"
- Shank: 1/4"
- Number of Teeth: 2
- Blade Material: Solid Carbide (HWM Micrograin)
- Rotation: Right-Hand (RH)
- Series: Short Series
Approved Applications
- Straight cuts including dadoes, grooves, and rabbets
- Mortising
- Template routing
- Plywood joinery
- Routing composites and natural wood panels
Frequently Asked Questions
What makes a short series straight bit different from a standard length version?
A short series bit has a reduced total length - in this case 2" overall with a 3/4" cutting height. The shorter profile increases rigidity and reduces lateral deflection during the cut, which results in better dimensional accuracy and smoother groove walls, particularly when routing in harder materials or at higher feed rates.
What materials can this solid carbide straight bit cut?
This bit is designed for use with plywood, composites, and natural woods including both hardwoods and softwoods. The micrograin solid carbide construction and non-stick PTFE coating help it handle resin-heavy materials like treated composites and laminates without excessive residue buildup on the cutting edges.
Is this bit compatible with CNC routers as well as handheld routers?
Yes. The 1/4" shank, right-hand rotation, and balanced concentricity make this bit suitable for handheld routers, router tables, and CNC routing machines. Each bit is tested for balance and concentricity, which is particularly important in CNC applications where consistent performance across repeated passes is required.
How does the orange PTFE coating benefit the cutting performance?
CMT's trademark orange non-stick PTFE coating prevents resin, pitch, and other residue from adhering to the bit surface during cutting. This reduces heat buildup caused by friction drag, helps maintain sharper cutting edges over time, and makes routine cleaning between uses significantly easier.
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