How to Fit Cupboard Hinges: A Step-by-Step Guide

Upgrading your kitchen or building custom cabinetry requires precision hardware installation to ensure doors hang straight and operate smoothly. Concealed hinges, often known as European hinges, are the industry standard for modern cabinetry because they provide a clean exterior finish and allow for fine post-installation adjustments. Successfully tackling a cupboard hinge fitting project comes down to careful measuring, using the correct tools, and following a methodical installation process.

Essential Tools and Materials

Before you begin fitting cupboard hinges, gather the necessary equipment to ensure the job goes smoothly:

• Concealed hinges and mounting plates: Standard overlay, half overlay, or inset, depending on your cabinet design (including soft-close variants if preferred).
• 35 mm Forstner drill bit: Designed to drill flat-bottomed blind holes for the hinge cups.
• Drill or cordless driver: With appropriate pilot drill bits and screwdriver bits.
• Hand tools: Tape measure, combination square, sharp pencil, and a set of wood screws (commonly 3.5 mm x 16 mm for cabinet carcasses).
• Safety equipment: Eye protection and clamps to secure doors while drilling.

Step 1: Marking and Drilling the Hinge Cup Holes

The hinge cup fits directly into the back of the cupboard door. Precision is crucial here, as an incorrect depth or offset will cause the door to bind or sit unevenly.

1. Determine vertical positions: As a general rule, position the centre of the top and bottom hinge cups roughly 70 mm to 100 mm from the top and bottom edges of the door. For taller doors (over 900 mm), a third central hinge is recommended.
2. Mark the setback: For standard 35 mm concealed hinges, the distance from the edge of the door to the edge of the 35 mm hole (the tab distance) is typically between 3 mm and 5 mm. Check the specifications of your specific hardware and mark your hole centres accordingly.
3. Drill the hinge cup: Using a 35 mm Forstner bit, carefully drill down to the required depth (usually around 11.5 mm to 12.5 mm). Use depth stops or wrap tape around the bit to avoid drilling through the front face of the door.

Step 2: Installing the Hinges into the Door

Once the recesses are drilled, clear away any wood shavings before placing the hinges into position.

• Insert the hinge cup into the drilled hole, ensuring the arm sits perpendicular (at 90 degrees) to the door edge. A straight edge placed across both hinge bodies helps ensure perfect alignment.
• Pre-drill shallow pilot holes for the mounting screws using a 2 mm bit to prevent the timber or MDF from splitting.
• Drive in the fixing screws until flush, taking care not to overtighten and strip the thread.

Step 3: Mounting Plates and Hanging the Door

The next phase of cupboard hinges fitting involves attaching the mounting plates inside the cabinet carcass.

• Measure carcass mounting points: Modern cabinets often follow the 32 mm system, featuring pre-drilled system holes set 37 mm back from the front edge. If you are drilling fresh holes, measure carefully so the mounting plate aligns directly with the hinge arm on the door.
• Fix the mounting plates: Secure the plates firmly to the inside wall of the carcass using suitable wood screws.
• Hang the door: For clip-on hinges, hook the front of the hinge arm onto the mounting plate and press the back until it clicks securely into place. For slide-on hinges, slide the hinge arm over the plate and tighten the fixing screw loosely.

Step 4: Aligning and Adjusting the Doors

Most concealed hinges feature three-way adjustment screws, making cabinet door alignment straightforward:

Cupboard Hinge Fitting FAQs

Can I replace standard hinges with soft-close versions?

Yes. As long as the cup diameter (standard 35 mm) and mounting plate hole spacing match your existing doors, soft-close hinges can directly replace older standard hinges using the existing cut-outs.

How many hinges do I need per cupboard door?

Doors up to 900 mm in height and under 5 kg usually require two hinges. Doors between 900 mm and 1600 mm (up to 10 kg) require three hinges, while larger or heavier pantry doors may require four or five hinges to prevent sagging.