Product Description
CMT Pattern Bit with Top Bearing, 1/4 in. Shank, 5/8 in. Diameter is a double-fluted, carbide-tipped template routing bit designed for woodworkers who need clean, repeatable results when following a guide template. Whether you are shaping cabinet components, furniture parts, signs, or decorative pieces, this CMT pattern bit pairs with a secured template to deliver precise, consistent cuts. The top-mounted bearing rides above the workpiece, keeping the work surface fully visible so you can guide each pass with confidence and accuracy.
Key Features
- Top-Mounted Bearing Guide - the bearing rides above the wood piece rather than below, giving you a clear line of sight to the cut path so you can work accurately along any template profile.
- Carbide-Tipped (HW) Cutting Edges - hard metal carbide tips maintain a sharp edge through extended production runs, reducing how often you need to stop and resharpen or replace the bit.
- 2-Flute (Double Fluted) Design - two cutting edges work together to produce smoother, cleaner surfaces on solid hardwood, plywood, MDF, and similar materials, minimizing tearout and sanding time afterward.
- 1/4 in. Shank - fits a wide range of handheld routers and compact router tables that accept 1/4 in. collets, making this bit accessible for hobbyists and professionals alike.
- 1 1/4 in. Cutting Height - the extended cutting height accommodates template routing on thicker stock, giving you more versatility across a variety of project thicknesses without switching bits.
- Right-Hand Rotation - standard RH rotation is compatible with virtually all consumer and professional router setups, ensuring straightforward installation and safe, predictable cutting behavior.
- Long Series Profile - the extended overall length of 2 3/4 in. provides the reach needed for deep or layered template work that a standard-length bit cannot accommodate.
Why This Product
- The top-mounted bearing design solves the visibility problem that bottom-bearing bits create - because the bearing is above the stock, you see exactly where the bit meets the template at all times, reducing costly errors on finished workpieces.
- With a 1 1/4 in. cutting height on a long-series body, this bit handles a broader range of template thicknesses and stock depths than a short-series pattern bit, making it the practical choice when your template adds significant height above the material.
- Carbide-tipped construction keeps the cutting edges sharp across repeated template passes, which matters in production environments or hobby shops where the same profile needs to be repeated many times from a single template.
- The 5/8 in. cutting diameter paired with a 1/4 in. shank offers a compact, maneuverable form factor suited for detail work on small parts such as toy components, inlays, signs, and curved furniture elements.
Specifications
- Manufacturer Part Number: 812.158.11B
- Brand: CMT Orange Tools
- Diameter: 5/8 in.
- Cutting Height: 1 1/4 in.
- Total Length: 2 3/4 in.
- Shank: 1/4 in.
- Number of Teeth: 2
- Material: HW (Hard Metal Carbide-Tipped)
- Rotation: Right-Hand (RH)
Approved Applications
- Template routing and pattern replication
- Cabinet and furniture component shaping
- Sign making and lettering cutouts
- Toy parts and decorative woodworking projects
- Curved profile duplication using a secured guide template
Frequently Asked Questions
How does the top bearing on this pattern bit differ from a bottom-bearing flush trim bit?
On this pattern bit, the bearing is positioned above the cutting flutes, which means the template or guide must be placed on top of the workpiece. This keeps the entire cut area visible as you work, whereas a bottom-bearing flush trim bit runs the template below the stock, which can obscure your view. The top-bearing setup is preferred when you want a clear sightline to confirm the bit is tracking the template correctly throughout the cut.
What router types are compatible with this bit?
This bit has a 1/4 in. shank, which fits handheld routers and router tables equipped with a 1/4 in. collet. Always confirm that your router accepts 1/4 in. shanks before installing the bit, and make sure the collet is clean and fully tightened before routing.
How should the template be prepared before using this pattern bit?
The template must be securely fastened to the workpiece before routing begins. A loose template can shift during the cut, producing an inaccurate profile and creating a potential safety hazard. When selecting a bit for your project, carefully consider the thickness of the template and all the implications of the cut, and opt for the shortest bit that will still accomplish the routing task.
What materials can this carbide-tipped pattern bit cut?
The hard metal carbide-tipped cutting edges are suited for solid hardwood, softwood, plywood, MDF, and similar wood-based panel materials commonly used in cabinet making, furniture building, signage, and toy production. Always inspect the bit for wear or damage before starting a new session to ensure clean, safe results.
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