Hinge drill bit set Wolfcraft 4655000 — Forstner Ø26×90 mm, centring Ø2.5 mm, twist Ø5×86 mm (3 pcs)

The Wolfcraft Hinge drill bit set 4655000 is a three-piece kit designed for accurate drilling when installing concealed hinges in wooden doors and cabinets. It includes a Ø26×90 mm Forstner bit for clean hinge cup holes, a Ø2.5 mm centring drill for precise positioning, and a Ø5×86 mm wood twist drill for pilot and through drilling. The set is intended for use on wood and wood-based materials and supports precise, splash-free holes required for concealed hinge installation.

Advantages

The combination of a Forstner bit, centring drill and wood twist drill provides a workflow from marking to final pilot hole without changing tools, reducing alignment errors and rework. The Forstner design produces flat-bottomed, splinter-free holes suitable for hinge cups, while the centring drill ensures accurate starting points to prevent bit wandering. The wood twist drill creates correct-diameter pilot holes for screw installation, improving fastening reliability.

Suitable for

• Drilling hinge cup holes for concealed hinges with Ø26 mm cup diameter
• Pilot drilling for wood screws and through holes in furniture doors and cabinet panels
• Woodworking tasks requiring flat-bottomed, clean holes in solid wood and wood-based panels

Key specifications

• Forstner bit diameter: 26 mm; working length: 90 mm
• Centring drill diameter: 2.5 mm
• Wood twist drill diameter: 5 mm; length: 86 mm
• Material compatibility: wood and wood-based panels
• Set contents: three drill bits (Forstner, centring, wood twist)

How to use

Mark hinge positions on the door or panel using the hinge template or layout marks. Use the Ø2.5 mm centring drill to create an accurate starter hole at the hinge cup centre to prevent the Forstner bit from wandering. Fit the Ø26×90 mm Forstner bit in the drill or drill press and drill the hinge cup hole to the required depth, keeping the drill perpendicular to the work surface for a clean, flat-bottomed hole. After the hinge cup is placed, use the Ø5×86 mm wood twist drill to make pilot holes for the screws at the marked screw positions, ensuring correct screw alignment and easy fastening.

Usage recommendations

Use appropriate clamping to secure workpieces and, when possible, use a drill press for the most accurate perpendicular holes. Operate at moderate speeds suited to the material, clear chips frequently to avoid overheating, and wear eye protection. Store the bits in their case to protect cutting edges and maintain accuracy.