CMT 310.127.12 Dowel Drill - 1/2" x 27 x 57.5mm Left-Hand Rotation is a precision short-series boring tool engineered for clean, accurate blind-hole drilling in furniture manufacturing, cabinet making, and panel processing applications. Built on a super-strength steel body with a tungsten carbide (HW) head and PTFE-coated spiral flutes, this left-hand rotation dowel drill is designed for use in multi-spindle CNC boring machines and panel processing centers where consistent hole quality and long tool life are essential. The two-flute configuration and negatively ground spurs work together to produce flat-bottomed holes with minimal tearout in chipboard, MDF, hardwood, softwood, plywood, laminates, and coated panels.

Key Features

• Tungsten Carbide (HW) Head with 2 Precision-Ground Cutting Edges - hard carbide tipped cutting geometry maintains sharpness through high-volume panel drilling cycles, reducing the frequency of tool changes and downtime.
• 2 Negatively Ground Spurs - score the material perimeter ahead of the cutting edges, delivering clean bore walls and flat-bottom holes with no rough edges or fiber tearout, critical for dowel joint quality in furniture and cabinet production.
• PTFE-Coated Spiral Flutes - the orange or black PTFE coating on the spiral portion prevents pitch, resin, and adhesive buildup, keeping the flutes clear and maintaining consistent chip evacuation over extended use.
• Super-Strength Steel Body - provides the structural rigidity needed to withstand the high-cycle demands of multi-spindle boring machines without deflection, protecting hole accuracy and positional consistency.
• Precision-Balanced Centre Point - centres the drill accurately on the work surface at entry, reducing positional drift and producing repeatable hole placement across large panel runs.
• Parallel Shank with Driving Flat and Length-Adjusting Screw - the 10x27mm parallel shank seats securely in boring machine chucks or adapters, while the driving flat and adjusting screw allow precise depth setting and prevent slippage under load.
• Left-Hand (LH) Rotation - designed specifically for left-hand spindle positions on multi-spindle CNC boring machines and panel processing centers, ensuring correct cutting geometry and chip ejection direction for those spindle orientations.
• Short Series (57.5mm Overall Length) - the compact 57.5mm body minimises spindle overhang and vibration, improving stability and surface finish quality in blind-hole boring applications.

Why This Product

• The left-hand rotation is a purpose-built specification - this drill is not a general-purpose bit but a dedicated component for LH spindle positions in multi-spindle boring machines, making it the correct tool when a right-hand drill would produce incorrect cutting action and poor hole quality.
• The combination of a carbide (HW) head with negatively ground spurs is optimized for the abrasive materials common in panel processing - chipboard, MDF, HDF, and coated panels - where steel-only tools wear rapidly and produce ragged entry holes unsuitable for tight-tolerance dowel joints.
• The PTFE spiral coating directly addresses one of the most common causes of boring tool failure in adhesive-rich and resin-heavy materials, keeping flutes clear without requiring frequent manual cleaning and extending the productive life of the tool in continuous production environments.
• The 1/2" (12.7mm) diameter and 27mm cutting height match standard dowel hole requirements in furniture and cabinet manufacturing, making this drill a drop-in specification fit for dowel connection layouts used in flat-pack and custom cabinet construction.

Specifications

• Manufacturer Part Number: 310.127.12
• Brand: CMT Orange Tools
• Diameter: 1/2"
• Cutting Height: 27mm
• Total Length: 57.5mm
• Shank: 10x27mm parallel shank with driving flat and length-adjusting screw
• Rotation: Left-Hand (LH)
• Number of Flutes: 2
• Number of Spurs: 2
• Number of Teeth: 2
• Spur Sharpening: Negatively ground spurs
• Blade Material: HW (Tungsten Carbide)
• Body Material: Super-strength steel
• Spiral Coating: Orange or black PTFE
• Series: Short Series (57.5mm)

Approved Applications

• Blind hole drilling for dowel connections in furniture manufacturing
• Panel drilling in cabinet making and flat-pack construction
• Boring in chipboard, MDF, HDF, hardwood, softwood, plywood, laminates, and coated panels
• Left-hand spindle positions on multi-spindle CNC boring machines
• CNC boring centers and panel processing centers
• Boring machines fitted with an appropriate adapter or chuck