Product Description
CMT 310.120.11 Dowel Drill 12 x 27 x 57.5mm RH by CMT is a precision-engineered 12mm diameter, two-flute dowel drill built for accurate blind hole boring in furniture manufacturing, cabinet making, and panel processing applications. Designed for right-hand rotation, this short-series boring bit features a tungsten carbide (HW) cutting head, a PTFE-coated spiral body, and a parallel shank with driving flat - making it a reliable choice for multi-spindle CNC boring machines, boring centers, and panel processing equipment. Whether you are drilling dowel connection holes in chipboard, MDF, hardwood, or coated panels, this dowel drill delivers consistent, clean results hole after hole.
Key Features
- HW (Tungsten Carbide) Cutting Head with 2 Precision-Ground Cutting Edges (Z2) - carbide construction maintains a sharp edge through dense materials like MDF, HDF, chipboard, and laminates, reducing regrinding frequency and downtime on the shop floor.
- 2 Negatively Ground Spurs (V2) - the negative spur geometry scores the material cleanly at the perimeter of the hole before material is removed, preventing tearout and producing flat-bottom blind holes with smooth bore walls - critical for tight-tolerance dowel joinery.
- PTFE-Coated Spiral Flutes - the orange or black PTFE coating on the spiral portion minimizes pitch, resin, and adhesive buildup during production runs, keeping the flutes clear and maintaining chip evacuation efficiency.
- Precision-Balanced Centre Point - the precision-ground centre point registers accurately on the workpiece surface, preventing bit walk and ensuring repeatable hole placement - essential on multi-spindle boring machines where positional accuracy is non-negotiable.
- Parallel Shank with Driving Flat and Length Adjusting Screw - the 10 x 27mm shank includes a driving flat and length adjusting screw for secure, slip-free mounting and fast depth setting in boring machine chucks and adapters.
- Super-Strength Steel Body - the premium quality steel body resists flex and vibration during drilling, supporting the carbide head and contributing to a longer overall tool life in high-cycle production environments.
- Right-Hand (RH) Rotation - standard right-hand cutting direction is compatible with the majority of industrial boring machines and CNC boring centers, simplifying tooling selection and replacement.
Why This Product
- The combination of negatively ground spurs and a precision-balanced carbide centre point makes this bit purpose-built for clean, flat-bottom blind holes used in dowel joinery - where hole quality directly affects joint strength and assembly fit.
- The PTFE-coated spiral keeps flutes free of adhesive and resin buildup during long production runs in panel processing and furniture manufacturing, reducing the need for frequent tool cleaning and maintaining consistent cutting performance.
- At 57.5mm total length with a 10 x 27mm parallel shank, this short-series drill is dimensioned for direct use in multi-spindle CNC boring machines and panel boring centers without spacers or modifications, simplifying machine setup.
- With a 12mm cutting diameter and 27mm cutting height, this drill covers one of the most common dowel hole sizes in cabinet and furniture production, making it a practical, high-use addition to any boring machine tooling set.
Specifications
- Manufacturer Part Number: 310.120.11
- Brand: CMT Orange Tools
- Diameter: 12mm
- Cutting Height: 27mm
- Total Length: 57.5mm
- Shank: 10 x 27mm parallel shank with driving flat
- Number of Cutting Edges: 2
- Number of Spurs: 2
- Spur Sharpening: Negatively ground spurs
- Rotation: Right-hand (RH)
- Blade Material: HW (Tungsten Carbide)
- Spiral Coating: PTFE (orange or black)
Approved Applications
- Blind hole drilling for dowel connections and dowel joinery
- Panel drilling in furniture and cabinet manufacturing
- Boring in solid wood (hardwood and softwood)
- Drilling chipboard, MDF, and HDF panels
- Boring plywood, laminates, and coated panels
- Plastics and similar sheet materials
Frequently Asked Questions
What machines is this dowel drill compatible with?
This 12mm dowel drill is designed for use in multi-spindle CNC boring machines, CNC boring centers, panel processing centers, and boring machines equipped with an adapter or chuck that accepts a 10 x 27mm parallel shank with a driving flat.
What is the purpose of the negatively ground spurs on this drill?
The 2 negatively ground spurs score the perimeter of the hole at the material surface before the carbide cutting edges remove the core material. This geometry prevents surface tearout and produces clean, smooth bore walls and flat hole bottoms - important for precise dowel fitting and clean face surfaces on finished panels.
Why does this drill have a PTFE coating on the spiral flutes?
The PTFE coating on the spiral portion of the drill resists pitch, adhesive, and resin buildup that can accumulate when drilling coated panels, laminates, and chipboard. Keeping the flutes clean supports chip evacuation and helps maintain consistent cutting performance across production runs without frequent tool cleaning.
Is this drill intended for through-hole or blind-hole drilling?
This drill is specifically designed for blind hole drilling - meaning it creates a flat-bottom hole that does not pass all the way through the workpiece. The precision-balanced centre point and negatively ground spurs work together to produce accurate, flat-bottom holes suited for dowel insertion in furniture and cabinet panel assembly.
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