The CMT 811.081.11 Solid Carbide Straight Bit Short Series is a precision-ground, 2-flute routing bit designed for clean, accurate straight cuts in plywood, composites, solid hardwood, softwood, and a wide range of other natural and engineered wood materials. Built from micrograin carbide on a fatigue-proof steel body, this short-series straight bit delivers exceptional rigidity and stability in handheld routers, router tables, and CNC routing machines alike. The compact 2-3/4 in. total length and 1/4 in. shank make it an ideal choice for mortising, dadoes, grooves, rabbets, and template routing where reduced length-to-diameter ratio means better control and reduced vibration.

Key Features

• Solid Micrograin Carbide Construction - the bit is machined from solid micrograin carbide rather than a brazed-tip design, providing uniform hardness throughout the cutting zone and extending usable tool life under heavy production workloads.
• Fatigue-Proof Steel Body - the shank and body are made from special fatigue-proof steel that resists flexing and stress cracking during continuous or high-feed-rate cuts, keeping deflection minimal even in demanding applications.
• CMT Orange Non-Stick P.T.F.E. Coating - the trademark orange P.T.F.E. surface treatment prevents resin, pitch, and other residue from bonding to the bit, reducing heat buildup and making cleanup faster between cuts.
• 2-Flute (2-Tooth) Cutting Geometry - the double-edged cutter geometry balances material removal rate with chip evacuation, producing smoother finished surfaces in plywood, composites, and natural woods.
• Short Series Design - the abbreviated 2-3/4 in. total length compared to standard-length straight bits reduces deflection and chatter, giving more consistent tolerances when routing grooves, dadoes, or mortises.
• Right-Hand Rotation - compatible with the standard right-hand spindle direction of virtually all handheld routers, router tables, and CNC spindles, so no special setup is required.
• Strict Quality Testing for Tolerance, Balance, and Concentricity - every bit undergoes factory-level inspection to verify cutting tolerance, rotational balance, and concentricity, which translates to consistent cut quality and reduced runout in production environments.

Why This Product

• The solid micrograin carbide construction - rather than a steel body with a brazed carbide tip - means the cutting edge retains its geometry longer under repeated use in dense hardwoods and composite materials, reducing the frequency of bit changes during production runs.
• The short-series length of 2-3/4 in. with a 5/16 in. cutting diameter provides a stiffer, more stable cut than full-length straight bits, making this bit especially well-suited for tight mortises, precise dadoes, and template routing where accuracy matters more than reach.
• The orange P.T.F.E. non-stick coating actively reduces pitch and resin adhesion, which means the bit stays cleaner longer and is less likely to overheat during extended cuts in resinous softwoods or glue-laminated panels.
• With a 1/4 in. shank, this bit fits the widest range of consumer and professional routers, making it a practical addition to any shop toolkit for straight-cut work in plywood, MDF, laminates, melamine, and solid wood.

Specifications

• Manufacturer Part Number: 811.081.11
• Brand: CMT Orange Tools
• Diameter: 5/16 in.
• Cutting Height: 1 in.
• Total Length: 2-3/4 in.
• Shank: 1/4 in.
• Number of Teeth: 2
• Material: Solid Carbide (HWM - micrograin carbide)
• Rotation: Right-Hand (RH)
• Series: Short Series
• Coating: P.T.F.E. Non-Stick (Orange)

Approved Applications

• Straight cuts - dadoes, grooves, and rabbets
• Mortising
• Template routing
• Plywood joinery
• Industrial-scale production routing in plywood, composites, and natural woods