Studio shot of the Freud 99-051 window sash profile router bit standing upright, featuring a red Perma-SHIELD body, carbide cutters with a curved profile, and a ball bearing guide on a 1/2 inch shank.
Technical diagram illustrating the cross-section profile created by the Freud 99-051 bit, showing a window sash profile with a 1/4 inch radius.
Informational chart titled Materials displaying the types of stock suitable for the bit, including veneered plywood, hardwoods, softwoods, and composites.
Graphic titled Tools displaying a table router, indicating the specific machinery required to safely operate the window sash profile bit.
Studio shot of the Freud 99-051 window sash profile router bit standing upright, featuring a red Perma-SHIELD body, carbide cutters with a curved profile, and a ball bearing guide on a 1/2 inch shank.
Studio shot of the Freud 99-051 window sash profile router bit standing upright, featuring a red Perma-SHIELD body, carbide cutters with a curved profile, and a ball bearing guide on a 1/2 inch shank.
Technical diagram illustrating the cross-section profile created by the Freud 99-051 bit, showing a window sash profile with a 1/4 inch radius.
Informational chart titled Materials displaying the types of stock suitable for the bit, including veneered plywood, hardwoods, softwoods, and composites.
Graphic titled Tools displaying a table router, indicating the specific machinery required to safely operate the window sash profile bit.
Studio shot of the Freud 99-051 window sash profile router bit standing upright, featuring a red Perma-SHIELD body, carbide cutters with a curved profile, and a ball bearing guide on a 1/2 inch shank.
Freud

Freud 99-051 Window Sash Profile Router Bit 1-11/32 Inch Diameter 1/2 Shank Carbide Divided Lite Window Making Tool

Only 1 left
SKU: 99-051
$72.49 USD

Description

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Create Authentic Wooden Windows: Freud 99-051 Window Sash Profile Router Bit

Restore vintage charm or build custom architectural features with the Freud 99-051 Window Sash Profile Router Bit. This high-precision tool is the second half of Freud’s premier window sash system. While its counterpart (the 99-050) handles the rail ends, the 99-051 is expertly engineered to cut the decorative profile on the edges of rails, stiles, sash bars, and muntins. This allows woodworkers to construct complete, true divided lite sashes that feature strong, interlocking joints and a classic aesthetic.

Designed for professional durability, this bit features Freud’s proprietary TiCo™ Hi-Density Carbide, ensuring razor-sharp cuts and long edge retention even when working with dense hardwoods or softwoods. The tool is protected by the exclusive Perma-SHIELD® Non-Stick Coating, which minimizes friction, prevents heat buildup, and resists the accumulation of pitch and resin. Engineered strictly for use in table-mounted routers with a fence, this bit delivers the stability and accuracy required for intricate window joinery.

Key Features

  • System Component: Works perfectly with the 99-050 Coping Bit to produce complete divided lite sashes.
  • Profile Cutting: Mills the decorative profile on all sash components including rails, stiles, and muntins.
  • TiCo™ Hi-Density Carbide: Specially formulated carbide blend stays sharper longer for a superior finish.
  • Perma-SHIELD® Coating: distinctive red coating prevents rust, reduces drag, and resists gumming.
  • Router Table Exclusive: Designed for safe, controlled operation in table-mounted routers (not for handheld use).
  • Material Versatility: Ideal for routing window parts from various hardwoods and softwoods.

What's Included

(1) Freud 1-11/32" Diameter Window Sash Profile Router Bit with 1/2" Shank (99-051)

Specifications

Brand Freud
Model Number 99-051
Application Window Sash Profile
Overall Diameter (D) 1-11/32 in
Shank Diameter (A) 1/2 in
Carbide Height (h) 1-25/64 in
Overall Length (H) 3-7/16 in
Minor Height (m) 17/32 in
Radius (R) 1/4 in
Bearing Diameter (B) 22mm (approx. 7/8 in)
Max RPM 16,000

Pro-Tip: When milling the profile on very narrow stock, such as the muntins (the inner bars separating the glass panes), never rely on your hands alone to guide the wood. Use a push stick or a specialized coping sled to maintain control and keep your fingers away from the cutter. This also reduces vibration, resulting in a cleaner profile and a tighter fit during assembly.