A studio shot of the three mortising router bits included in the Freud 89-670 set, featuring red Perma-SHIELD coating and carbide-tipped edges in 7/32 inch, 15/32 inch, and 23/32 inch diameters.
Technical profile diagrams demonstrating the precise grooves and dadoes created by the 16-094, 16-109, and 16-116 bits to perfectly match the true thickness of undersized plywood panels.
A materials compatibility graphic showing that the Freud 89-670 bit set is ideal for routing clean channels in plywood, hardwoods, softwoods, and MDF.
A tool compatibility chart indicating that the Freud undersized plywood bits can be used with a hand-held router, a table-mounted router, or a CNC machine.
A studio shot of the three mortising router bits included in the Freud 89-670 set, featuring red Perma-SHIELD coating and carbide-tipped edges in 7/32 inch, 15/32 inch, and 23/32 inch diameters.
An action photo of a Freud red mortising bit routing a perfectly fitted groove into a thick hardwood board on a router table.
An official logo for an authorized Freud dealer, featuring the brand name in red text set against a black and silver industrial badge design.
A studio shot of the three mortising router bits included in the Freud 89-670 set, featuring red Perma-SHIELD coating and carbide-tipped edges in 7/32 inch, 15/32 inch, and 23/32 inch diameters.
Technical profile diagrams demonstrating the precise grooves and dadoes created by the 16-094, 16-109, and 16-116 bits to perfectly match the true thickness of undersized plywood panels.
A materials compatibility graphic showing that the Freud 89-670 bit set is ideal for routing clean channels in plywood, hardwoods, softwoods, and MDF.
A tool compatibility chart indicating that the Freud undersized plywood bits can be used with a hand-held router, a table-mounted router, or a CNC machine.
A studio shot of the three mortising router bits included in the Freud 89-670 set, featuring red Perma-SHIELD coating and carbide-tipped edges in 7/32 inch, 15/32 inch, and 23/32 inch diameters.
An action photo of a Freud red mortising bit routing a perfectly fitted groove into a thick hardwood board on a router table.
An official logo for an authorized Freud dealer, featuring the brand name in red text set against a black and silver industrial badge design.
Freud

Freud 89-670 3 Piece Undersized Plywood Router Bit Set 1/2 Inch Shank 7/32 15/32 23/32 Inch Diameters with Wooden Case for Grooves and Dadoes

In stock
SKU: 89-670
$55.39 USD

Description

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Seamless Joinery for Modern Materials: The Freud 89-670 Undersized Plywood Bit Set

The Freud 89-670 3-Piece Undersized Plywood Router Bit Set is the definitive solution for woodworkers and cabinet makers struggling with the loose joints caused by standard-sized bits. Modern plywood rarely measures its nominal 1/4", 1/2", or 3/4" thickness, often leaving unsightly gaps in grooves and dadoes. This specialized set features mortising bits precisely sized at 7/32", 15/32", and 23/32" to match the actual true thickness of today's undersized panels. Whether you are building high-end cabinetry in Tomball or custom shelving in your home shop, these bits ensure a tight, professional-grade fit every time, eliminating the need for shims or multiple passes.

Crafted with Freud’s legendary TiCo™ High-Density Carbide, each bit is engineered for industrial performance and longevity. The 1/2" shank provides maximum stability and reduced vibration when used in table-mounted or hand-held routers. To protect your investment, each bit features Freud’s signature red Perma-SHIELD® non-stick coating, which drastically reduces friction, prevents pitch buildup, and protects against corrosion. These bits effortlessly cut through hardwood, softwood, plywood, and composites, delivering a flawless finish. Housed in a premium wooden shadowbox case, this set is an essential upgrade for any craftsman who demands precision and structural integrity in their joinery.

Key Features

  • Precision Plywood Sizing: Includes bits specifically designed to match the true thickness of 1/4", 1/2", and 3/4" plywood panels.
  • Perma-SHIELD® Coating: Non-stick coating reduces heat and friction while preventing pitch gumming and rust.
  • High-Density Carbide Tips: Features industrial-grade carbide for superior material removal and extended edge life.
  • Universal Material Use: Perfectly routs hardwood, softwood, plywood, and various composite materials.
  • Versatile Compatibility: Engineered for peak performance in both hand-held and table-mounted routers.
  • Protective Storage: Comes complete with Freud's signature wooden shadowbox case for secure bit organization.

What's Included

  • (1) 7/32" Diameter Mortising Bit (#16-094)
  • (1) 15/32" Diameter Mortising Bit (#16-109)
  • (1) 23/32" Diameter Mortising Bit (#16-116)
  • (1) Premium Wooden Shadowbox Storage Case

Specifications

Brand Freud
MFG Part # (OEM) 89-670
Bit Type Plywood / Mortising
Shank Diameter 1/2 Inch
Bit Material Carbide Tipped
Number of Bits Included 3
Bit Sizes Included 7/32", 15/32", 23/32"
Assembled Weight 0.8 lbs
Color Red
Country of Origin Italy
UPC 008925090649
Warranty Lifetime against Manufacturer's Defects

Pro-Tip: Before routing your final workpiece, always use a scrap piece of your project's plywood to test the fit. Plywood thicknesses can vary between batches; a quick test cut ensures the bit depth and width are perfectly dialed in for the tightest possible interlocking joint without forcing the material.