Studio product view of the Freud 18-126 router bit, featuring a 1/2-inch silver shank and a red Perma-SHIELD coated round nose cutting head with a 1/2-inch radius tip.
Technical diagram illustrating the cutting profile of the Freud 18-126 core box bit, showing a cross-section of a U-shaped groove cut into wood with a 1-inch width and a 1/2-inch radius.
Studio product view of the Freud 18-126 router bit, featuring a 1/2-inch silver shank and a red Perma-SHIELD coated round nose cutting head with a 1/2-inch radius tip.
Studio product view of the Freud 18-126 router bit, featuring a 1/2-inch silver shank and a red Perma-SHIELD coated round nose cutting head with a 1/2-inch radius tip.
Technical diagram illustrating the cutting profile of the Freud 18-126 core box bit, showing a cross-section of a U-shaped groove cut into wood with a 1-inch width and a 1/2-inch radius.
Studio product view of the Freud 18-126 router bit, featuring a 1/2-inch silver shank and a red Perma-SHIELD coated round nose cutting head with a 1/2-inch radius tip.
Freud

Freud Router Bit 18-126 1 Inch 1/2 Inch Radius Round Nose Core Box (1/2 Inch Shank Solid Carbide 24000 RPM CNC Fluting Signmaking Woodworking)

Only 1 left
SKU: 18-126
$44.99 USD

Description

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Freud 18-126 1 Inch 1/2 Inch Radius Round Nose Core Box Router Bit

The Freud 18-126 is a 1-inch overall cutting diameter round nose core box router bit engineered to cut deep semi-circular grooves, decorative fluting channels, and engraved sign lettering. Built with a heavy-duty 1/2-inch shank and a 1/2-inch radius tip geometry, this 2-flute solid carbide tool produces clean U-shaped troughs without bottom tearing or chatter marks. Constructed entirely from Freud Premier Solid Carbide, it operates stably at rotational speeds up to 24,000 RPM across CNC machinery, router tables, or handheld routers in solid hardwoods, softwoods, plywood, and composites.

Best Used For:

  • Architectural Fluting & Column Milling: Routing uniform 1/2-inch radiused vertical fluting channels into large cabinet face frames, pilasters, and mantle casings.
  • CNC Engraved Signmaking & Lettering: Carving deep, rounded lettering profiles and 3D semi-circular decorative grooves on custom timber plaques.
  • Finger Pull & Juice Groove Machining: Cutting clean, comfortable finger-slot recesses on drawer fronts and wide liquid-drainage channels on solid wood cutting boards.

Key Performance & Safety Features

  • Freud Premier Solid Carbide Construction: Solid carbide body provides maximum rigidity, extreme wear resistance, and long-lasting edge sharpness.
  • Precision 1/2-Inch Radius Geometry: Ground profile cuts smooth, accurate 1-inch wide semi-circular channels with flawless surface finishes.
  • Heavy-Duty 1/2-Inch Steel Shank: Rigid 1/2-inch shank diameter minimizes flex, runout, and cutter vibration during high-speed routing.
  • Extended 1-1/4-Inch Carbide Height: Deep cutter flutes facilitate rapid chip ejection to prevent heat accumulation and wood scorching during deep passes.
  • Versatile Multi-Machine Compatibility: Engineered for high-stability performance in automatic CNC routers, handheld trim routers, and table routers.
  • High-Speed 24,000 RPM Capability: Maintains structural stability and cutting precision at high spindle speeds across dense timber.

What's Included

  • (1) Freud 18-126 1" Round Nose Core Box Router Bit with 1/2" Shank

Technical Specifications

Brand Manufacturer Freud® Tools
Model Part Number OEM SKU 18-126
Overall Cutting Diameter (D) 1.000 inch (1" / 25.4 mm)
Profile Tip Radius (R) 0.500 inches (1/2" / 12.7 mm)
Shank Diameter (A) 0.500 inches (1/2" / 12.7 mm)
Carbide Cutting Height (h) 1.250 inches (1-1/4" / 31.8 mm)
Overall Tool Length (H) 2.813 inches (2-13/16" / 71.4 mm)
Number of Flutes / Cutters 2 Flutes
Maximum Operating Speed 24,000 RPM
Tool Metallurgy Material Freud Premier Solid Carbide
Primary Machine Compatibility CNC Routers, Handheld Routers, Router Tables

Pro-Tip: Make deep core box passes in multiple shallow step-down increments rather than a single full-depth cut; incremental passes allow optimal chip clearing and extend the sharp cutting life of small solid carbide bits.