CMT 311.051.11 Dowel Drill 5.1 x 35 x 70mm RH is a precision-engineered, right-hand rotation boring tool built for clean, accurate blind hole drilling in panel-based furniture and cabinetry production. Manufactured by CMT, this 5.1mm diameter, 2-flute dowel drill features a solid tungsten carbide (HW) cutting head bonded to a super-strength steel body, making it a reliable choice for high-volume boring on chipboard, MDF, hardwood, softwood, plywood, laminates, and coated panels. The spiral portion is coated with P.T.F.E. to resist pitch and adhesive buildup, keeping the bit running cleanly through repeated production cycles. Whether used in a multi-spindle CNC boring machine, a panel processing center, or a boring machine with an adapter or chuck, this dowel drill delivers consistent, flat-bottom holes sized precisely for dowel joinery connections.

Key Features

• Tungsten carbide (HW) cutting head - carbide construction maintains sharp cutting edges through demanding production runs in abrasive materials like MDF, chipboard, and laminated panels, reducing replacement frequency and downtime.
• 2 precision-ground HW cutting edges - dual cutting edges promote balanced cutting forces and a smoother bore finish, resulting in tighter-fitting dowel joints and cleaner panel surfaces.
• 2 negatively ground spurs (V2 configuration) - negatively sharpened spurs score the panel face cleanly ahead of the cut, preventing tear-out and surface delamination on coated and laminated workpieces.
• Precision balanced centre point - the accurately centered tip registers positively on the workpiece, preventing the bit from wandering at entry and ensuring repeatable hole placement across high-quantity boring runs.
• P.T.F.E.-coated spiral flutes - the orange or black P.T.F.E. coating on the spiral portion prevents pitch and glue from bonding to the tool body, reducing cleaning time and extending operational tool life.
• 2 spiral flutes - twin flutes efficiently evacuate chips from the bore during drilling, reducing heat buildup and keeping the hole geometry accurate in deep blind-hole applications.
• 10 x 30mm parallel shank with driving flat and length adjusting screw - the parallel shank design with a driving flat locks securely into boring machine chucks and multi-spindle heads, and the adjusting screw allows fine-tuning of drilling depth without removing the tool.
• Right-hand (RH) rotation - clockwise cutting rotation is compatible with the vast majority of CNC boring centers and panel drilling equipment, making this bit a direct-fit replacement in standard production setups.
• 35mm cutting height and 70mm total length - the long-series 70mm body allows adequate clearance for deep boring on thick panels, while the 35mm cutting height provides the depth capacity needed for full dowel socket engagement.

Why This Product

• The 5.1mm bore diameter is a common standard for wooden dowel joinery in furniture and cabinet manufacturing, and the negatively ground spurs paired with precision HW cutting edges mean hole walls are clean enough for tight-fitting dowel assembly without additional finishing.
• The P.T.F.E. spiral coating directly addresses one of the most common productivity problems in panel boring - adhesive and resin buildup on the flutes - keeping the tool cutting freely and reducing the need to stop production for cleaning.
• The parallel shank with driving flat and adjustable depth screw makes this drill straightforward to set up and reposition in multi-spindle boring machines, reducing machine setup time between panel runs.
• Built from super-strength steel with a carbide (HW) cutting head, this dowel drill is designed to handle the full range of panel materials used in modern cabinetry - from raw hardwood and softwood to chipboard, MDF, HDF, plywood, and laminated or coated panel surfaces - without needing to switch tools between material types.

Specifications

• Manufacturer Part Number: 311.051.11
• Brand: CMT Orange Tools
• Description: Dowel Drill 5.1 x 35 x 70mm RH
• Diameter: 5.1mm
• Cutting Height: 35mm
• Total Length: 70mm
• Shank: 10 x 30mm parallel shank with driving flat and length adjusting screw
• Number of Flutes: 2
• Number of Spurs: 2
• Spur Sharpening: Negatively ground spurs
• Number of Teeth: 2
• Blade Material: HW (tungsten carbide)
• Rotation: Right-hand (RH)
• Coating: P.T.F.E. (orange or black) on spiral portion

Approved Applications

• Blind hole drilling for dowel joinery connections
• Panel drilling in furniture manufacturing
• Cabinet making and casework production
• Boring in chipboard, MDF, HDF, hardwood, softwood, plywood, laminates, and coated panels