Product Description
CMT Straight Bit Short Series - 31/64" Diameter, 1/2" Shank is a precision-ground, double-edged routing bit engineered for clean straight cuts in plywood, solid hardwood, softwood, composites, and natural woods. Built for both handheld routers and router table setups, this short-series straight bit delivers consistent performance in demanding production environments where cutting accuracy and tool longevity are non-negotiable.
Key Features
- Micrograin Carbide Cutting Edges - harder and denser than standard carbide, micrograin construction resists wear through heavy continuous use, keeping edges sharper for longer between sharpenings.
- FATIGUE-PROOF Steel Body - the bit body is manufactured from special fatigue-proof steel that absorbs vibration and stress under the heaviest workloads, reducing the risk of bit failure during sustained production runs.
- CMT Orange Non-Stick P.T.F.E. Coating - the trademark orange surface coating prevents resin, pitch, and other residue from bonding to the bit, reducing heat buildup, protecting against corrosion, and extending overall tool life.
- 2-Flute Right-Hand Rotation Design - two cutting edges provide balanced material removal and a smooth finish on dadoes, grooves, rabbets, and mortises in a single pass.
- Strict Quality Testing for Balance and Concentricity - every bit undergoes quality inspection to confirm cutting tolerance, balance, and concentricity, so the bit runs true without runout that could damage workpieces or machines.
- 1/2" Shank for Stability - the full 1/2" shank minimizes deflection and chatter compared to smaller shanks, producing cleaner cuts and reducing stress on the router collet during deep or wide passes.
Why This Product
- The short-series profile (2 1/2" total length with a 1" cutting height) keeps the bit closer to the collet, dramatically reducing vibration and deflection - ideal for applications where precision matters more than extended reach.
- The P.T.F.E. non-stick coating directly addresses one of the most common production problems - resin and pitch accumulation - helping the bit stay clean and cut efficiently across high-volume runs in melamine, composites, and natural woods.
- The 31/64" diameter is a purpose-specific size suited to joinery work where standard fractional sizes leave too much or too little material, making this bit a practical choice for precise dado and groove fitting.
- Micrograin carbide combined with fatigue-proof steel construction makes this bit suitable for industrial-scale CNC routing machines as well as handheld routers, giving woodworking shops a single versatile tool across multiple machine types.
Specifications
- Manufacturer Part Number: 811.623.11
- Brand: CMT Orange Tools
- Diameter: 31/64"
- Cutting Height: 1"
- Total Length: 2 1/2"
- Shank: 1/2"
- Number of Teeth: 2
- Material: HW (Hardmetal - Micrograin Carbide)
- Rotation: Right-hand (RH)
- Product Type: Straight Bit Short Series
Approved Applications
- Straight cuts including dadoes, grooves, and rabbets
- Mortising
- Template routing
- Plywood joinery
- Industrial-scale production routing in plywood, composites, and natural woods
Frequently Asked Questions
What machines is this straight bit compatible with?
This bit is compatible with handheld routers, router tables, and CNC routing machines. The 1/2" shank is a standard size accepted by most mid-range and professional router collets.
Why is the short-series length an advantage over a standard-length straight bit?
The short-series design places the cutting edges closer to the router collet, which reduces leverage, minimizes vibration and deflection, and helps maintain tighter cutting tolerances - particularly useful for precision joinery and template work where runout would affect fit.
What is the purpose of the orange P.T.F.E. coating on this bit?
The non-stick P.T.F.E. coating is CMT's trademark surface treatment that prevents resin, pitch, and debris from adhering to the bit body. This keeps the bit cooler during operation, protects it from corrosion, and extends cutting life - especially when working with resinous softwoods, composites, melamine, and laminates.
What materials can this bit cut?
This bit is suited for use in solid hardwood, softwood, plywood, MDF, chipboard, laminates, melamine, plastic, and composites. The micrograin carbide construction and fatigue-proof steel body are designed to handle even the heaviest of workloads across a variety of materials.
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