A studio product shot of the Freud 77-608 three-flute mortise compression spiral router bit, featuring a solid carbide body with a polished silver shank and a dark blue-black coated spiral cutting tip.
An informational graphic titled Materials, displaying 3D samples of veneered plywood, hardwoods, softwoods, and composites to indicate the compatible surfaces for this compression router bit.
An informational graphic titled Tools, showing a handheld router, a table-mounted router, and a CNC machine spindle to demonstrate the different equipment compatible with this bit.
A studio product shot of the Freud 77-608 three-flute mortise compression spiral router bit, featuring a solid carbide body with a polished silver shank and a dark blue-black coated spiral cutting tip.
An informational graphic titled Materials, displaying 3D samples of veneered plywood, hardwoods, softwoods, and composites to indicate the compatible surfaces for this compression router bit.
An informational graphic titled Tools, showing a handheld router, a table-mounted router, and a CNC machine spindle to demonstrate the different equipment compatible with this bit.
Freud

Freud 77-608 1/2 Inch Three Flute Mortise Compression Spiral Router Bit with 1/2 Inch Shank Solid Carbide Black I.C.E. Coating Melamine and Plywood

Only 1 left
SKU: 77-608
$71.29

Description

Achieve Flawless Chip-Free Finishes on Double-Sided Materials with Precision Compression Technology

The Freud 77-608 1/2" Mortise Compression Spiral Bit is a high-performance solution engineered for woodworkers who demand perfection when routing delicate, double-sided materials. Unlike standard compression bits, this mortise-specific design features a shorter up-shear length, making it the premier choice for milling grooves, mortises, and through-cuts in thin materials 5/8" thick or less. By combining up-cut and down-cut action, this bit compresses the fibers of the material toward the center, ensuring a splinter-free finish on both the top and bottom surfaces of melamine, veneered plywood, and laminates.

Built for industrial durability, the 77-608 is manufactured from Freud Premier Solid Carbide and enhanced with TiCo™ High-Density Carbide to provide 2X the cutting life and performance of standard uncoated bits. The bit is finished with Freud’s proprietary Black I.C.E. (Industrial Cooling Element) coating, which maintains a cool cutting edge and facilitates superior chip evacuation to prevent burning. Optimized for high-speed use in CNC machines, handheld routers, and table-mounted setups, this three-flute bit provides a faster feed rate and a smoother finish in hardwoods, softwoods, and composites.

Key Features

  • Precision Compression Design: Short up-shear length is perfect for clean grooves and mortises in delicate materials.
  • Multi-Material Excellence: Expertly routs melamine, veneer plywood, hardwood, softwood, and composites.
  • Black I.C.E. Coating: Innovative coating keeps the cutting edge cool and ensures superior chip evacuation.
  • TiCo™ High-Density Carbide: Specialized Freud carbide provides 2X increased life and performance versus standard bits.
  • Three-Flute Geometry: Features three cutters for faster feed rates and an exceptionally high-quality finish.
  • Versatile Application: Ideal for through-cuts in thin double-sided materials and professional-grade mortising.

What's Included

  • (1) Freud 77-608 1/2" Three Flute Mortise Compression Spiral Bit

Specifications

Brand Freud
Model Number 77-608
Cutter Diameter (D) 1/2 in
Shank Diameter (A) 1/2 in
Carbide Height (h) 1 in
Up-shear Length 7/32 in
Overall Length (H) 3 in
Number of Cutters 3
Maximum RPM 24,000
Material Construction Premier Solid Carbide
Coating Type Black I.C.E.

Pro-Tip: To get the most out of your mortise compression bit, ensure that your first pass is deep enough to allow the down-shear portion of the bit to engage the top surface of the material. This creates the "compression" effect that prevents chipping. When routing grooves, a 7/32" or deeper initial pass will ensure that both the top and bottom of the groove remain perfectly crisp.