Product Description
The CMT 811.030.11 Solid Carbide Straight Bit Short Series is a precision-ground, 2-flute routing bit engineered for clean, accurate straight cuts in demanding production environments. With a 3mm cutting diameter and a compact 1 3/4 in. overall length, this short-series bit is designed to minimize deflection and maximize rigidity during plunge cuts, dadoes, grooves, and mortising operations. Built from micrograin solid carbide and coated with CMT's signature orange non-stick surface treatment, it delivers consistent performance across natural woods, composites, plywood, and engineered panels when used in handheld routers, router tables, or CNC routing machines.
Key Features
- Solid Micrograin Carbide Construction (HWM) - the entire cutter body is manufactured from high-density micrograin carbide rather than a steel body with brazed tips, giving the bit exceptional hardness and resistance to edge chipping under heavy workloads and high feed rates.
- Short Series Design - the reduced 1 3/4 in. total length keeps the bit close to the collet for maximum stiffness, reducing vibration and deflection during fine detail work or precision dadoing in thin stock.
- Orange Non-Stick P.T.F.E. Coating - CMT's trademark surface treatment repels resin, pitch, and other residue buildup, helping the bit run cooler, stay cleaner between uses, and resist corrosion, which directly extends operational tool life.
- 2-Flute (Double-Edge) Geometry, Right-Hand Rotation - the two cutting edges balance material removal with chip evacuation, producing smooth surfaces in both solid hardwood and sheet goods without burning or tear-out.
- Fatigue-Proof Steel Shank - the 1/4 in. shank is formed from special fatigue-proof steel that absorbs the mechanical stress of repetitive production use without cracking or deforming, even during sustained heavy workloads.
- Strict Quality Testing for Tolerance, Balance, and Concentricity - every bit is individually inspected to ensure the cutting edges run true, eliminating wobble that would cause oversized grooves or rough finishes in precision joinery and template routing.
Why This Product
- The 3mm cutting diameter makes this bit one of the few options capable of routing very narrow grooves, slots, and mortises in a single pass - ideal for inlay work, fine joinery, and CNC programs requiring small-diameter toolpaths in plywood or solid wood.
- The short-series form factor is specifically suited to CNC routing applications where tool overhang must be minimized to maintain cut accuracy - the compact geometry reduces flex at the tip even when feed rates are pushed for production efficiency.
- Solid carbide construction rather than carbide-tipped steel means the bit holds its edge geometry longer across abrasive materials like MDF, chipboard, and laminates, reducing the frequency of tool changes during batch production runs.
- The 1/4 in. shank fits the majority of handheld routers and router tables in common use, making this bit a versatile addition to a shop that handles both manual routing tasks and light CNC work without requiring a dedicated collet adapter.
Specifications
- Manufacturer Part Number: 811.030.11
- Brand: CMT Orange Tools
- Diameter: 3mm
- Cutting Height: 5/16 in.
- Total Length: 1 3/4 in.
- Shank: 1/4 in.
- Number of Teeth: 2
- Blade Material: Solid Carbide (HWM)
- Rotation: Right-Hand (RH)
- Series: Short Series
Approved Applications
- Straight cuts - dadoes, grooves, and rabbets
- Mortising
- Template routing
- Plywood and composite panel joinery
- Narrow slot and inlay routing in solid hardwood and softwood
- CNC toolpath routing in MDF, chipboard, laminates, and melamine
Frequently Asked Questions
What is the difference between a short-series straight bit and a standard-length straight bit?
A short-series bit has a reduced total length - in this case 1 3/4 in. overall - which keeps more of the shank seated inside the collet. This shorter overhang significantly reduces lateral flex and vibration at the cutting tip, making short-series bits the preferred choice for precision work where groove width accuracy is critical, such as CNC routing or tight-tolerance template work.
Is this bit compatible with CNC routing machines as well as handheld routers?
Yes. The 1/4 in. shank and short-series geometry are well suited to CNC routing machines, router tables, and handheld routers. The solid carbide construction and strict concentricity testing mean the bit runs true at the consistent spindle speeds used in CNC applications, making it a reliable choice for automated production runs in plywood, composites, and natural woods.
What materials can this straight bit cut effectively?
This bit is designed for industrial-scale production across a variety of materials including solid hardwood, softwood, plywood, MDF, chipboard, laminates, melamine, and plastic composites. The micrograin solid carbide construction maintains edge sharpness longer than standard carbide-tipped bits when working with abrasive engineered panels such as MDF and melamine.
How does the P.T.F.E. coating benefit day-to-day use?
CMT's orange non-stick P.T.F.E. coating acts as a barrier between the bit surface and the resins, pitches, and adhesives present in many wood and composite materials. By preventing residue from bonding to the cutter, the coating reduces heat buildup caused by friction from accumulated debris, helps the bit clean more easily between operations, and protects the carbide and shank from corrosion during storage.
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