CMT 392.351.11 Hinge Boring Bit - 35mm x 1/2" Parallel Shank by CMT is a carbide-tipped boring bit engineered for drilling clean, flat-bottom hinge cup holes used in European concealed hinge installations. Designed for right-hand rotation, this 35mm bit accepts a 1/2" parallel (straight) shank, making it compatible with router tables, drill presses, and handheld drill machines. Whether you are boring hinge cup recesses in solid hardwood cabinet doors or machining flat-bottom holes in MDF and chipboard panels, this bit delivers the precision and repeatability that professional woodworkers and cabinetmakers demand.

Key Features

• Super-Strength Steel Body with HW (Carbide) Tips - the hardened steel shank and tungsten carbide cutting edges resist heat and wear, extending tool life across high-volume hinge boring operations in hardwood, softwood, MDF, chipboard, and plywood.
• Precision-Balanced HW Centre Point - a precisely ground carbide centre point locates the bit accurately on your layout mark before cutting begins, reducing drift and ensuring each hinge cup hole is exactly where it needs to be.
• 2 HW Precision-Ground Cutting Edges (Z2) - dual carbide cutting edges produce a smooth, flat-bottomed bore required for European concealed hinge cups, eliminating the need for secondary clean-up passes.
• 2 HW Negatively Ground Spurs (V2) - the negatively ground spurs score the material perimeter cleanly before the cutters remove waste, preventing tear-out and delivering crisp bore walls even in veneered panels and finished surfaces.
• 1/2" Parallel Shank - the straight parallel shank seats securely in standard drill press chucks, router table collets, and handheld drill machines, giving you flexibility across multiple machine setups without adapters.
• Right-Hand (RH) Rotation - optimized for conventional right-hand spindle rotation found on virtually all standard drilling machines, so the bit installs and runs without any special configuration.
• 35mm Cutting Diameter - matches the 35mm industry-standard hinge cup dimension required by European concealed hinges from virtually all major hinge manufacturers, ensuring proper fit and function every time.

Why This Product

• The 35mm diameter is the universal standard for European concealed hinge cup boring - using this bit means your hinge cups will accept hinges from virtually any manufacturer without modification or shimming.
• The combination of negatively ground spurs and precision carbide cutting edges means flat-bottom hinge cup holes are bored in a single clean pass - no chipping, no secondary finishing, and no rework on finished cabinet door faces.
• A 1/2" parallel shank provides broad machine compatibility - from a handheld drill to a drill press to a router table setup - so one bit serves multiple workstations without the need for additional adapters.
• HW (carbide) construction throughout - centre point, cutting edges, and spurs - means this bit maintains sharpness across demanding production runs in hardwood, MDF, chipboard, and plywood without frequent resharpening intervals.

Specifications

• Manufacturer Part Number: 392.351.11
• Brand: CMT Orange Tools
• Diameter: 35mm
• Total Length: 2-3/8"
• Shank: 1/2"
• Rotation: Right-Hand (RH)
• Number of Spurs: 2
• Number of Teeth: 2
• Material: HW (Carbide-Tipped)
• Shank Type: Parallel (Straight)
• Product Type: Hinge Boring Bit

Approved Applications

• Drilling flat-bottom hinge cup holes for European concealed hinge installation
• Cabinet door hinge cup boring in solid hardwood
• Hinge cup boring in softwood cabinet components
• Flat-bottom hole drilling in MDF panels and doors
• Hinge cup boring in chipboard and particleboard furniture
• Boring hinge recesses in plywood cabinet doors and panels