Product Description
The CMT 811.142.11 Straight Bit Short Series is a 2-flute carbide router bit designed for precise, clean cuts in plywood, solid hardwood, softwood, composites, and a wide range of engineered wood materials. Built on a compact short-series body with a 9/16 in. cutting diameter and a 1/4 in. shank, this bit delivers accurate dado, groove, and mortise cuts in handheld routers, router tables, and CNC routing machines. CMT engineered this straight bit from micrograin carbide bonded to fatigue-proof steel, then finished with their signature orange non-stick coating - making it a reliable choice for both production shops and demanding woodworking applications.
Key Features
- Micrograin Carbide Cutting Edges - the fine grain structure of the carbide maintains a sharper edge longer under heavy workloads, reducing the need for frequent resharpening and keeping production moving.
- Fatigue-Proof Steel Body - the specially formulated steel resists stress and flex even during extended cutting sessions, improving safety and dimensional consistency in repeated cuts.
- Orange Non-Stick P.T.F.E. Coating - CMT's proprietary surface treatment prevents resin, pitch, and other residue from bonding to the bit, reducing heat buildup, lowering friction, and extending the usable life of the tool.
- 2-Flute (2-Tooth) Design - dual cutting edges provide balanced chip evacuation and smooth shear action across solid wood, plywood, MDF, and composites, producing flat-bottomed grooves and clean sidewalls.
- Right-Hand Rotation - compatible with the standard spindle direction of handheld routers, router tables, and CNC routers, ensuring immediate drop-in use without any adapter.
- Short Series Profile - the compact 2 1/4 in. total length reduces bit deflection during routing, improving cut accuracy especially in template routing and mortising applications.
- Strict Quality Testing - every bit is individually tested for cutting tolerance, balance, and concentricity, so the bit runs true and vibration-free from the first pass.
Why This Product
- The short-series body minimizes lateral deflection during cuts - making this bit a smart pick for tight mortises, precise dadoes, and template-guided work where accuracy cannot be compromised.
- The combination of micrograin carbide and fatigue-proof steel is engineered to handle heavy production volumes across difficult materials like plywood, laminates, and composites - reducing downtime from bit changes.
- The orange P.T.F.E. non-stick coating keeps residue from building up during long runs, so the bit stays cleaner, cooler, and cutting efficiently without constant cleaning interruptions.
- Individual balance and concentricity testing means less vibration at the router collet - protecting both the tool and the workpiece surface finish during CNC and handheld routing operations.
Specifications
- Manufacturer Part Number: 811.142.11
- Brand: CMT Orange Tools
- Diameter: 9/16 in.
- Cutting Height: 9/16 in.
- Total Length: 2 1/4 in.
- Shank: 1/4 in.
- Number of Teeth: 2
- Material: Micrograin Carbide (HW) on Fatigue-Proof Steel
- Rotation: Right-Hand (RH)
- Series: Straight Bit Short Series
Approved Applications
- Straight cuts including dadoes, grooves, and rabbets
- Mortising
- Template routing
- Plywood joinery and panel work
- CNC routing in production environments
- Routing composites, natural woods, and engineered sheet goods
Frequently Asked Questions
What materials can the CMT 811.142.11 straight bit cut?
This bit is suited for a wide variety of materials including solid hardwood, softwood, plywood, MDF, chipboard, laminates, melamine, and plastic composites. The micrograin carbide cutting edges are specifically designed to handle both natural woods and engineered wood products at industrial production volumes.
What router types are compatible with this bit?
The 1/4 in. shank and right-hand rotation make this bit compatible with handheld routers fitted with a 1/4 in. collet, router tables, and CNC routing machines that accept 1/4 in. shank tooling with standard right-hand spindle rotation.
What is the purpose of the orange P.T.F.E. non-stick coating?
CMT's orange P.T.F.E. coating serves multiple functions - it prevents resin, pitch, and residue from sticking to the bit body, reduces friction and heat generation during cutting, and protects the steel body against corrosion. The result is a cleaner-running bit that stays sharper longer between cleanings.
Why choose a short-series straight bit over a standard-length bit?
Short-series bits have a more compact total length - in this case 2 1/4 in. overall - which reduces the tendency of the bit to flex or deflect under lateral cutting forces. This makes short-series bits especially useful for precise mortising, dado work, and template routing where dimensional accuracy and flat-bottomed cuts are critical.
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