A professional studio shot of the Freud 77-405 solid carbide mortise compression spiral router bit, showing the specialized 3/8 inch shank and the unique two-flute cutting geometry designed for chip-free mortising in double-sided materials.
An informational graphic titled Materials, displaying 3D samples of veneered plywood, hardwoods, softwoods, composites, and melamine or laminate 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 professional studio shot of the Freud 77-405 solid carbide mortise compression spiral router bit, showing the specialized 3/8 inch shank and the unique two-flute cutting geometry designed for chip-free mortising in double-sided materials.
An informational graphic titled Materials, displaying 3D samples of veneered plywood, hardwoods, softwoods, composites, and melamine or laminate 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 77-405 3/8" Two Flute Mortise Compression Spiral Router Bit 3/8 Inch Shank Solid Carbide CNC Tool Plywood Melamine Thin Double Sided Materials

Only 1 left
SKU: 77-405
$69.79

Description

Master the Perfect Mortise: Flawless Cuts in Delicate Double-Sided Materials

The Freud 77-405 Mortise Compression Bit is the ultimate solution for professionals seeking a flawless finish on challenging materials. Specifically engineered with a shorter up-shear length than standard compression bits, this tool is optimized for routing grooves and mortises or performing through-cuts in thin double-sided stock. By pulling the material toward the center from both the top and bottom, it effectively eliminates chipping and tear-out, ensuring a crisp, clean edge on both surfaces of 5/8-inch material or thinner.

Constructed from Freud Premier Solid Carbide and enhanced with the revolutionary Black I.C.E. (Industrial Cooling Element) coating, this bit is built for high-production longevity. The specialized coating keeps the cutting edge cooler and facilitates superior chip evacuation, providing up to 2X the performance life compared to standard uncoated bits. Whether you are using a CNC machine, a table-mounted router, or a hand-held setup, the Freud 77-405 delivers unmatched precision in plywood, melamine, hardwoods, and softwoods.

Key Features

  • Shortened up-shear design creates perfect grooves and mortises in delicate materials.
  • Black I.C.E. Coating maintains a cool cutting edge and provides superior chip evacuation.
  • TiCo™ High-Density Carbide construction delivers 2X increased life and performance.
  • Optimized for through-cuts in thin double-sided materials (5/8" or less).
  • Versatile application for CNC, hand-held, and table-mounted router setups.
  • Specifically engineered for melamine, veneer plywood, hardwood, and softwood.

What's Included

  • (1) Freud 77-405 3/8" Two Flute Mortise Compression Bit

Specifications

Model Number 77-405
Overall Diameter (D) 0.375 in. (3/8")
Carbide Height (h) 1.25 in. (1-1/4")
Shank Diameter (A) 0.375 in. (3/8")
Overall Length (H) 3.0 in.
Number of Cutters 2
Maximum RPM 24,000
Material Solid Carbide
Coating Black I.C.E.
Bit Type Mortise Compression Spiral

Pro-Tip: When routing mortises, use this bit to ensure the top surface remains clean while the up-shear portion clears chips from the bottom of the groove. For best results on through-cuts in thin material, ensure your first pass is deep enough to allow the down-shear flutes to engage the top edge immediately!