CMT 309.075.11 Dowel Drill 7.5 x 43 x 70mm RH is a precision-engineered boring tool built for furniture manufacturing, cabinet making, and panel processing applications that demand clean, accurate dowel holes. Manufactured by CMT, this right-hand rotation drill combines a tungsten carbide (HW) cutting head with a super-strength steel body and a PTFE-coated cutter portion to deliver consistently smooth, flat-bottom blind holes in chipboard, MDF, solid wood, laminates, and coated panels. With a 7.5mm diameter, 43mm cutting height, and 70mm overall length, this long-series dowel drill is purpose-built for thicker panel stock and multi-spindle CNC boring machines where precision and repeatability are critical.

Key Features

• HW (Tungsten Carbide) Cutting Head - carbide construction maintains sharp cutting edges through high-volume production runs, reducing downtime from frequent tool changes in chipboard, MDF, and hardwood applications.
• PTFE Coating on the Cutter Portion - the black or orange P.T.F.E. surface prevents pitch and glue buildup on the flutes, keeping the tool running cleanly and extending service life between sharpenings.
• Precision-Balanced Centre Point - the HW centre point registers the drill accurately on the workpiece surface, eliminating wandering at entry and ensuring consistent hole positioning across multi-spindle setups.
• 2 Negatively Ground Spurs (V2) - negatively sharpened spurs score the material cleanly before the cutting edges engage, producing tear-out-free bore walls and crisp flat-bottom holes required for tight dowel fits.
• 2 Precision-Ground Carbide Cutting Edges (Z2) - dual HW cutting edges deliver a balanced cut that minimizes vibration and produces a smooth bore surface, critical for accurate dowel alignment in assembled panels.
• 4 Spiral Flutes - four flutes evacuate chips efficiently from the cutting zone, reducing heat buildup and maintaining hole quality during continuous boring cycles on panel processing centers.
• Parallel Shank 10 x 20mm with Driving Flat and Length Adjusting Screw - the shank design locks securely into multi-spindle boring machine heads, and the length adjusting screw allows precise depth setting without additional tooling.
• 7.5mm Diameter / 43mm Cutting Height / 70mm Overall Length - the long-series 70mm body accommodates thicker panel stock, while the 43mm cutting height provides ample engagement depth for blind dowel holes in demanding furniture and cabinet applications.

Why This Product

• The 70mm overall length and 43mm cutting height make this drill the right choice for thicker panel stock where standard-length dowel drills cannot reach the required blind hole depth - no compromises in furniture or cabinet carcass construction.
• The combination of negatively ground spurs and precision-ground carbide cutting edges means bore entry and bore walls are clean on both face-laminated and coated panels, eliminating the secondary cleanup work that rough-boring tools require.
• The PTFE-coated cutter portion resists adhesive and pitch deposits that accumulate in glue-heavy production environments, keeping cycle times consistent without frequent manual cleaning between operations.
• The parallel 10 x 20mm shank with driving flat and length adjusting screw provides positive drive engagement and repeatable depth control in multi-spindle CNC boring machines and boring centers, supporting high-volume panel production with minimal setup variation.

Specifications

• Manufacturer Part Number: 309.075.11
• Brand: CMT Orange Tools
• Diameter: 7.5mm
• Cutting Height: 43mm
• Total Length: 70mm
• Shank: 10 x 20mm (parallel shank with driving flat and length adjusting screw)
• Number of Spurs: 2
• Number of Teeth (Cutting Edges): 2
• Number of Flutes: 4
• Rotation: Right-hand (RH)
• Blade Material: HW (Tungsten Carbide)
• Sharpening: Negatively ground spurs

Approved Applications

• Drilling blind holes for dowel connections in panel furniture
• Cabinet making and carcass assembly
• Panel drilling on multi-spindle CNC boring machines
• Panel processing centers and CNC boring centers
• Boring machines with adapter or chuck
• Chipboard, MDF, HDF, hardwood, softwood, plywood, laminates, and coated panel boring