Studio product shot of the Freud 12-186 double flute straight router bit, featuring a thick 1/2-inch silver shank and a wide red Perma-SHIELD coated cutter head with large carbide flutes.
Technical diagram showing a cross-section of a wood cut, indicating a wide slot width of 1-3/8 inch and a cutting depth of 1-1/4 inch for model number 12-186.
3D computer graphic showing a block of wood with a wide, deep square channel groove cut into the top surface, illustrating the heavy material removal profile of the bit.
Top-down diagram of the router bit profile showing the large circular cutting path and the arrangement of the two grey carbide cutting flutes against a red background.
Studio product shot of the Freud 12-186 double flute straight router bit, featuring a thick 1/2-inch silver shank and a wide red Perma-SHIELD coated cutter head with large carbide flutes.
Studio product shot of the Freud 12-186 double flute straight router bit, featuring a thick 1/2-inch silver shank and a wide red Perma-SHIELD coated cutter head with large carbide flutes.
Technical diagram showing a cross-section of a wood cut, indicating a wide slot width of 1-3/8 inch and a cutting depth of 1-1/4 inch for model number 12-186.
3D computer graphic showing a block of wood with a wide, deep square channel groove cut into the top surface, illustrating the heavy material removal profile of the bit.
Top-down diagram of the router bit profile showing the large circular cutting path and the arrangement of the two grey carbide cutting flutes against a red background.
Studio product shot of the Freud 12-186 double flute straight router bit, featuring a thick 1/2-inch silver shank and a wide red Perma-SHIELD coated cutter head with large carbide flutes.
Freud

Freud 12-186 1-3/8 Inch Double Flute Straight Router Bit 1/2 Inch Shank TiCo Carbide Tip for Surfacing Grooving Plywood Hardwood Composite Woodworking

Only 2 left
SKU: 12-186
$29.97

Description

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Master Your Surface Milling: The Freud 1-3/8" Industrial Double Flute Straight Router Bit

Achieve furniture-grade precision with the Freud 12-186 Double Flute Straight Router Bit, the industry standard for surfacing, grooving, and edge-routing. Engineered with Freud's exclusive TiCo Hi-Density Carbide, this 1-3/8 inch diameter bit is specifically designed to tackle large-scale material removal while maintaining an ultra-smooth finish. Whether you are leveling a live-edge slab, cutting deep grooves for cabinetry, or clean-routing composites, the dual-flute geometry provides the perfect balance of fast cutting speeds and superior chip clearance. The tips are precision-relieved to allow for effortless plunge cuts, making this an incredibly versatile tool for both complex joinery and general-purpose surfacing tasks.

Durability meets versatility in this industrial-grade bit, which is optimized for use across CNC, hand-held, and table-mounted routers. The 1/2 inch shank provides maximum stability and reduced vibration during high-torque applications, ensuring clean cuts in hardwoods, softwoods, plywood, and even abrasive composite materials. By utilizing precise hook and shear angles, Freud has eliminated the "chatter" often found in lesser bits, resulting in a burn-free finish that saves you hours of sanding time. From professional shop environments to enthusiast workshops, this bit is the foundational tool required for high-performance woodworking and flawless surface preparation.

Key Features

  • TiCo Hi-Density Carbide: Specialized blend of titanium and cobalt carbide provides maximum durability and a longer cutting life.
  • Double Flute Design: Dual cutting edges deliver faster material removal and a cleaner finish in all wood types.
  • Precision Plunge Cutting: Relieved tips allow the bit to dive directly into the center of a workpiece for internal grooving and mortising.
  • Universal Compatibility: Specifically balanced for high-performance use in CNC, table-mounted, and portable routers.
  • Smooth Shear Angles: Optimized geometry reduces friction and heat buildup, preventing wood burn and ensuring a glass-smooth surface.
  • Versatile Material Range: Expertly handles hardwood, softwood, plywood, and abrasive composite materials without clogging.

What's Included

  • (1) Freud 12-186 1-3/8" Double Flute Straight Router Bit

Specifications

Overall Diameter (D) 1-3/8"
Shank Diameter (A) 1/2"
Carbide Height (h) 1-1/4"
Overall Length (H) 3"
Number of Cutters 2
Maximum RPM 16,000
Bit Material TiCo Hi-Density Carbide
Ideal Applications Grooving, Edge-Routing, Surfacing
Cutting Action Straight Double Flute
Workpiece Material Hardwood, Softwood, Plywood, Composites

Pro-Tip: When using large-diameter straight bits for surfacing or flattening slabs, always use a "stepping" approach by making multiple shallow passes rather than one deep cut. This extends the life of your TiCo Carbide and prevents tear-out on the wood surface.