Product Description
The CMT 855.804.11 Window Sill and Finger Bit is a precision-ground router bit from CMT, purpose-built for shaping window sill edges and creating finger pulls on door and drawer faces. With a 1 1/4 in. cutting diameter, a 1 in. cutting height, and a dual-radius profile combining a 3/8 in. and 7/32 in. radius, this bit delivers a clean, consistent profile that works equally well on solid hardwood, softwood, and wood composites. Mounted on a 1/2 in. shank for secure, low-vibration seating in both handheld routers and router tables, it is a dependable choice for cabinet makers, finish carpenters, and millwork professionals who need repeatable results on edge-profiling tasks.
Key Features
- Window sill and finger pull profile - originally designed for shaping window sill edges, this bit's dual-radius geometry also produces smooth, comfortable finger pulls on door and drawer edges, giving you two functional profiles from a single bit.
- 1 1/4 in. cutting diameter with 1 in. cutting height - the generous cutting envelope handles full-depth window sill profiles and drawer finger pulls in a single pass, reducing the need for multiple setups.
- Dual-radius profile (3/8 in. and 7/32 in.) - the combination of two distinct radii in one profile creates a refined, furniture-grade edge contour that is difficult to achieve with standard roundover or cove bits.
- 1/2 in. shank - the larger shank diameter provides greater rigidity and reduced runout compared to smaller shanks, resulting in smoother cuts and less chatter during operation.
- 2-tooth HW (carbide) construction - two industrial-grade carbide cutting edges maintain sharpness longer through hardwood and softwood alike, extending the service life of the bit between sharpenings.
- Right-hand rotation - standard RH rotation is compatible with the vast majority of routers and router tables, making setup straightforward and tool changes fast.
- 2 7/8 in. total length - the overall length gives sufficient clearance above the collet when used in a router table, helping prevent interference with fences and guides during profiling cuts.
Why This Product
- If you need a single bit that handles both window sill edge shaping and drawer or door finger pulls, this dual-purpose profile saves you the cost and setup time of buying and changing two separate bits.
- The 1/2 in. shank is the preferred choice for production routing and router table work - it seats more securely than a 1/4 in. shank and significantly reduces vibration on longer cuts, which matters when running multiple drawer fronts or window sill lengths in sequence.
- With a full 1 in. cutting height, the bit profiles the entire edge depth in a controlled pass, making it well suited for thicker stock used in window sill applications where a shallow bit would require multiple repositioned passes.
- The 2-flute HW carbide tip construction is appropriate for the hardwood species commonly used in millwork and cabinetry, providing clean entry and exit cuts that minimize tearout on visible finished surfaces.
Specifications
- Manufacturer Part Number: 855.804.11
- Brand: CMT Orange Tools
- Diameter: 1 1/4 in.
- Cutting Height: 1 in.
- Total Length: 2 7/8 in.
- Radius: 3/8 in.
- Shank: 1/2 in.
- Number of Teeth: 2
- Material: HW (Carbide)
- Rotation: Right-hand (RH)
Approved Applications
- Window sill edge shaping
- Finger pull routing on door edges
- Finger pull routing on drawer edges
- Decorative edge profiling on solid wood millwork
Frequently Asked Questions
Can this bit be used in both a handheld router and a router table?
Yes. The 1/2 in. shank is compatible with routers that accept 1/2 in. collets, whether used handheld or mounted in a router table. Router table use is often preferred for window sill and finger pull work because it provides greater control and consistency across multiple pieces.
What does the dual-radius profile (3/8 in. and 7/32 in.) mean for the finished edge?
The bit produces a contoured profile that combines two different radii in a single pass - a 3/8 in. radius and a 7/32 in. radius. This creates a shaped sill or pull profile rather than a simple roundover, giving finished surfaces a more refined, furniture-grade appearance.
What materials can this bit cut?
The HW (carbide) cutting tips are suited for solid hardwood and softwood, which are the materials most commonly used for window sills, drawer fronts, and cabinet door edges. As with any carbide router bit, best results are achieved with clean, dry stock free of embedded fasteners.
How many cutting edges does this bit have, and how does that affect performance?
This bit has 2 cutting teeth (flutes). A 2-flute design balances chip clearance and cutting speed well for wood-profiling applications, producing smooth surface finishes on both straight-grain and figured hardwoods when feed rate and router speed are properly matched to the material.
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