CMT 309.127.11 Dowel Drill 1/2" x 43 x 70mm RH by CMT is a precision-engineered dowel boring tool designed for furniture manufacturing, cabinet making, and panel processing applications. Built around a tungsten carbide (HW) cutting head with 2 precision-ground cutting edges and 2 negatively ground spurs, this right-hand rotation drill produces clean, flat-bottomed blind holes in chipboard, MDF, solid wood, and laminates. The 4-spiral-flute design and PTFE-coated cutter body make it a reliable choice for multi-spindle CNC boring machines, dedicated boring centers, and panel processing equipment where consistent dowel hole quality is critical.

Key Features

• HW (Tungsten Carbide) cutting head - delivers long service life and clean cutting performance in abrasive engineered panels like chipboard, MDF, and laminates, reducing the need for frequent tool changes.
• 2 precision-ground cutting edges (Z2) - produce accurate, flat-bottomed blind holes essential for tight-fitting dowel connections in furniture and cabinet assembly.
• 2 negatively ground spurs (V2) - score the panel surface ahead of the cutting edges, preventing tear-out and producing clean bore walls for a professional finished result.
• 4 spiral flutes - efficiently evacuate chips and waste material during boring, helping maintain hole quality and reducing heat buildup at the cutting zone.
• PTFE-coated cutter portion (black or orange coating) - resists pitch and adhesive buildup on the flutes, keeping the tool running cleanly during high-volume panel drilling operations.
• Super-strength steel body - provides a rigid, durable foundation for the carbide head, reducing vibration and maintaining dimensional accuracy across repeated drilling cycles.
• Parallel shank with driving flat and length-adjusting screw - ensures secure, repeatable seating in multi-spindle boring machine chucks and allows precise depth setting without slippage.
• Precision-balanced centre point - locates accurately on pre-marked or CNC-positioned centres, reducing positional error and ensuring dowel holes align correctly across multiple panel faces.
• 43mm cutting height in a 70mm overall length (long series) - accommodates thicker panel stock and deeper blind holes where a standard-length drill would fall short.
• Right-hand (RH) rotation - compatible with the standard rotation direction of the vast majority of multi-spindle CNC boring machines and boring centers used in panel furniture production.

Why This Product

• The 70mm overall length with a 43mm cutting depth makes this drill the right choice when working with thicker panels or when deeper dowel pockets are needed - applications where a shorter-series drill simply cannot reach the required depth.
• The combination of negatively ground spurs and a precision-balanced HW centre point means bore entry is clean and centred every time, directly reducing rework and reject rates in high-volume cabinet and furniture production.
• The PTFE-coated flutes and carbide cutting head work together to resist buildup and wear, extending intervals between resharpening or replacement - an important factor in continuous-run panel processing environments.
• The 10x20mm parallel shank with driving flat and length-adjusting screw is a standard interface for multi-spindle boring machinery, making this drill a direct-fit replacement or addition without adapter modifications.

Specifications

• Manufacturer Part Number: 309.127.11
• Brand: CMT Orange Tools
• Diameter: 1/2"
• Cutting Height: 43mm
• Total Length: 70mm
• Shank: 10x20mm
• Number of Spurs: 2
• Number of Teeth: 2
• Sharpening: Negatively ground spurs
• Material: HW (Tungsten Carbide)
• Rotation: Right-hand (RH)

Approved Applications

• Drilling blind holes for dowel connections in panel furniture
• Cabinet making and case construction
• Panel drilling on multi-spindle CNC boring machines
• Panel drilling on CNC boring centers and panel processing centers
• Boring operations on machines fitted with a compatible adapter or chuck