Product Description
CMT 310.070.11 Dowel Drill 7 x 27 x 57.5mm RH is a precision-engineered, carbide-tipped boring tool from CMT designed for high-accuracy blind hole drilling in furniture manufacturing, cabinet making, and panel processing applications. Built around a 7mm cutting diameter and a compact 57.5mm overall length, this right-hand rotation dowel drill is optimized for use on multi-spindle CNC boring machines, boring centers, and panel processing equipment where repeatable, clean-edged holes are essential. The PTFE-coated spiral flutes resist pitch and adhesive buildup, keeping the tool clean during extended production runs, while the tungsten carbide (HW) cutting head delivers consistent performance in chipboard, MDF, hardwood, softwood, plywood, laminates, and coated panels.
Key Features
- Tungsten Carbide (HW) Cutting Head with 2 Precision-Ground Cutting Edges (Z2) - hard-wearing carbide construction maintains a sharp cutting edge through demanding production volumes, reducing the need for frequent tool changes and downtime.
- 2 Negatively Ground Spurs (V2) - the negative spur geometry scores the perimeter of the hole cleanly before the main cutters remove material, eliminating tearout and producing flat-bottomed blind holes with crisp, splinter-free walls - critical for dowel joint accuracy in finished panels and furniture components.
- PTFE-Coated Spiral Flutes - the orange or black PTFE coating on the spiral portion prevents resin, glue, and pitch from adhering to the tool body, extending service life and keeping chip evacuation smooth across long production cycles.
- Super-Strength Steel Body - the premium steel construction provides the structural rigidity needed to resist deflection during high-speed boring, supporting consistent hole diameter and depth across every cycle.
- Precision-Balanced Centre Point - the HW centre point self-locates on the workpiece without wandering, ensuring accurate hole placement even on CNC machines operating at production feed rates.
- Parallel Shank with Driving Flat and Length-Adjusting Screw (10 x 27mm) - the standardized 10 x 27mm shank with driving flat seats securely in common boring machine spindles, while the length-adjusting screw allows precise depth setting for repeatable blind hole depth without additional tooling setup.
- Right-Hand (RH) Rotation - matched to the majority of CNC boring machine spindle configurations, simplifying machine setup and ensuring compatibility with standard multi-spindle heads.
- 27mm Cutting Height - the 27mm usable cutting length provides ample depth capacity for standard dowel hole depths used in panel furniture and cabinet joinery, without the added length that can introduce runout in short-series applications.
Why This Product
- The negatively ground spurs combined with the precision-balanced HW centre point work together to produce clean entry and flat-bottomed blind holes - this matters directly in dowel joinery where hole quality determines joint strength and assembly fit.
- The PTFE-coated spiral flutes address one of the most common productivity losses in panel boring operations - pitch and adhesive buildup - by releasing chips freely and resisting contamination without requiring frequent cleaning stops.
- At 57.5mm total length with a 10 x 27mm parallel shank, this short-series drill fits the standard spindle geometry of multi-spindle CNC boring machines and boring centers, making it a practical replacement or additional spindle drill without adapter modifications.
- With 2 HW cutting edges and 2 precision spurs, this drill is built to work across a wide range of engineered and solid wood panel materials - chipboard, MDF, HDF, hardwood, softwood, plywood, and laminates - giving furniture and cabinet shops a single reliable tool across their common substrate mix.
Specifications
- Manufacturer Part Number: 310.070.11
- Brand: CMT Orange Tools
- Product Type: Dowel Drill
- Diameter: 7mm
- Cutting Height: 27mm
- Total Length: 57.5mm
- Shank: 10 x 27mm parallel shank with driving flat and length-adjusting screw
- Number of Cutting Edges: 2 (Z2)
- Number of Spurs: 2 (V2)
- Number of Spiral Flutes: 2
- Spur Sharpening: Negatively ground spurs
- Blade Material: HW (Tungsten Carbide)
- Spiral Coating: PTFE (orange or black)
- Rotation: Right-hand (RH)
Approved Applications
- Blind hole drilling for dowel connections in panel and solid wood furniture
- Cabinet making and case construction requiring precise dowel alignment
- Panel drilling on CNC boring centers and multi-spindle boring machines
- Boring operations in chipboard, MDF, HDF, hardwood, softwood, plywood, laminates, and coated panels
- High-volume production boring in furniture manufacturing environments
Frequently Asked Questions
What shank size does this dowel drill use, and will it fit my boring machine?
This drill uses a 10 x 27mm parallel shank with a driving flat and a length-adjusting screw. This is a standard shank format used on multi-spindle CNC boring machines, CNC boring centers, and panel processing centers. It can also be used on boring machines fitted with a compatible adapter or chuck. Always verify your machine's spindle bore accepts a 10mm parallel shank before installation.
What is the difference between a negatively ground spur and a standard spur, and why does it matter?
Negatively ground spurs are sharpened at a geometry that scores the outer perimeter of the hole before the main cutting edges remove the core material. This pre-scoring action severs wood or panel fibers cleanly at the hole edge, preventing surface tearout, chipping, and rough bore walls. For dowel joinery, this produces the flat-bottomed, clean-edged holes needed for tight, accurate fits - particularly important when drilling laminates, coated panels, or veneered chipboard where surface quality is visible in the finished piece.
What materials can this 7mm dowel drill be used on?
This drill is suited for blind hole boring in chipboard, MDF, HDF, hardwood, softwood, plywood, laminates, and coated panels. The tungsten carbide (HW) cutting head handles the abrasive content found in engineered wood products such as MDF and chipboard, while the negatively ground spurs protect surface layers on laminates and coated panels during entry.
What does the PTFE coating on the spiral flutes do, and does it affect cutting performance?
The PTFE coating applied to the spiral portion of the drill body creates a low-friction, non-stick surface that resists the adhesion of pitch, resin, and glue - substances commonly encountered when boring chipboard, MDF, and adhesive-laminated panels. By preventing material from bonding to the flutes, the coating keeps chip evacuation efficient throughout the tool's working life and reduces the cleaning maintenance required between production runs. It does not interfere with the cutting geometry of the HW head or the negatively ground spurs.
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