Product Description
CMT 310.080.12 Dowel Drill 8 x 27 x 57.5mm Left-Hand by CMT is a precision-engineered, carbide-tipped boring tool built for clean, accurate blind hole drilling in furniture manufacturing, cabinet making, and panel processing applications. Designed with a left-hand (LH) rotation, this short-series dowel drill delivers flat-bottom holes with sharp, splinter-free walls in chipboard, MDF, hardwood, softwood, plywood, laminates, and coated panels. The PTFE-coated spiral and tungsten carbide (HW) cutting head make it a dependable choice for high-volume CNC boring operations and multi-spindle boring machines alike.
Key Features
- Tungsten Carbide (HW) Cutting Head with 2 Precision-Ground Cutting Edges (Z2) - carbide tipped construction delivers long service life and consistent hole quality even in abrasive engineered wood panels and laminates.
- 2 Negatively Ground Spurs (V2) - score the material cleanly ahead of the cutting edges, producing flat-bottom blind holes with no tearout or rough bore walls for professional-grade dowel connections.
- PTFE Coating on the Spiral Portion - the orange or black PTFE coating resists pitch and adhesive buildup on the flutes, reducing cleaning downtime and extending tool life in production environments.
- Super-Strength Steel Body - the high-grade steel shank and body resist flexing under load, maintaining drilling accuracy at the tight tolerances required for precision dowel joinery.
- Precision-Balanced Centre Point - keeps the drill centered on entry for accurate hole placement, reducing setup time and material waste in panel drilling operations.
- Parallel Shank with Driving Flat and Length Adjusting Screw - the 10 x 27mm parallel shank seats securely in boring machine chucks and adapters, while the adjusting screw allows depth fine-tuning for repeatable results across production runs.
- Left-Hand (LH) Rotation - matches LH spindle positions on multi-spindle CNC boring centers and panel processing equipment, ensuring proper chip evacuation and correct hole geometry.
- Short Series at 57.5mm Total Length - compact overall length reduces overhang and vibration in boring machine spindles, contributing to straighter, more consistent holes.
Why This Product
- The 2-flute HW carbide design paired with negatively ground spurs addresses one of the most common challenges in panel drilling - tearout and rough bore edges - producing clean, flat-bottom holes ready for dowel insertion without secondary finishing.
- The PTFE-coated spiral is a practical advantage in continuous production: it prevents glue and resin from bonding to the flutes, meaning fewer tool stoppages for cleaning during high-volume furniture or cabinet runs.
- Left-hand rotation and the 10 x 27mm parallel shank with driving flat make this drill a direct fit for LH spindle positions on multi-spindle CNC boring machines and boring centers - no adapters or modification required for compatible machines.
- At 8mm cutting diameter with a 27mm cutting height and 57.5mm total length, this short-series drill covers the standard dowel bore dimensions used in 32mm system furniture construction, making it a practical everyday tool for cabinet and panel shops.
Specifications
- Manufacturer Part Number: 310.080.12
- Brand: CMT Orange Tools
- Product Type: Dowel Drill
- Diameter: 5/16 in. (8mm)
- Cutting Height: 27mm
- Total Length: 57.5mm
- Shank: 10 x 27mm parallel shank with driving flat and length adjusting screw
- Number of Flutes: 2
- Number of Cutting Edges: 2
- Number of Spurs: 2
- Spur Sharpening: Negatively ground spurs
- Rotation: Left-Hand (LH)
- Blade Material: HW (Tungsten Carbide)
- Series: Short Series (57.5mm)
Approved Applications
- Blind hole drilling for dowel connections
- Panel drilling in furniture manufacturing
- Cabinet making and assembly
- Drilling in chipboard, MDF, HDF, hardwood, softwood, plywood, laminates, and coated panels
Frequently Asked Questions
What machines are compatible with the CMT 310.080.12 dowel drill?
This drill is designed for use in multi-spindle CNC boring machines, CNC boring centers, panel processing centers, and boring machines equipped with a compatible adapter or chuck that accepts a 10 x 27mm parallel shank with driving flat.
Why does this drill use left-hand (LH) rotation instead of right-hand?
Multi-spindle boring machines and panel processing centers include both right-hand and left-hand spindle positions. The LH rotation on this drill is required for correct operation in left-hand spindle positions - using the wrong rotation direction would cause the cutting edges to rub rather than cut, resulting in poor hole quality and rapid tool wear.
What does the PTFE coating on the spiral actually do during use?
The PTFE coating on the spiral portion of the drill prevents pitch, resin, and adhesive from bonding to the flute surfaces during drilling. This keeps chip evacuation efficient and reduces the frequency of tool cleaning, which is especially valuable during continuous production runs in furniture or cabinet manufacturing environments.
What is the purpose of the negatively ground spurs on this dowel drill?
The 2 negatively ground spurs score the material cleanly at the perimeter of the hole before the main cutting edges remove the core. This scribing action prevents surface tearout and produces clean, flat-bottom blind holes with smooth bore walls - essential for tight-fitting dowel joints in finished panel and solid wood components.
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