How to Safely Remove Concealed Cup Hinges Without Damaging the Cabinet Carcase
The safe removal of a concealed cup hinge requires the step-by-step release of the hinge arm and mounting plate to prevent screws from tearing out of often delicate chipboard carcases.
Whether performing a repair, moving house, or upgrading to concealed hinges / cabinet hinges with soft close – the correct removal of furniture fittings is an essential task for every fitter and ambitious DIY enthusiast. Technically speaking, a concealed cup hinge (often called a concealed hinge) consists of two main components: the hinge cup, which sits inside the furniture door, and the mounting plate, which is screwed to the interior of the cabinet carcase.
If you pull carelessly during removal or use the wrong tools, you risk damaging the chipboard or MDF. Torn screw holes make subsequent reinstallation extremely difficult. This guide explains professional removal, exact technical specifications, and how to avoid typical mistakes.
Difficulty Level and Time Required
- Difficulty: Easy to medium (depending on the age and condition of the fitting)
- Time required: Approx. 5 minutes per cabinet door
- Target audience: Tradespeople, fitters, DIY furniture builders
Required Tools and Materials
For professional removal, you do not need specialist tools, but rather precisely fitting standard equipment. Using the wrong screwdriver is the most common cause of damaged screw heads.
- PZ2 Pozidriv screwdriver: Most European furniture fittings and chipboard screws use a PZ drive. A PH (Phillips) screwdriver slips easily here and ruins the screw profile.
- Cordless screwdriver (optional): Only use on a low torque setting to avoid stripping the thread in the timber when loosening stubborn screws.
- Folding rule or calliper: For the exact measurement of the cup diameter (typically 35 mm) and hole centres for potential replacement parts.
- Wood glue and wooden dowels (3 mm or 5 mm): Keep ready in case you discover during removal that old drill holes in the carcase need repairing.
Step-by-Step Guide: Removing a Concealed Cup Hinge
Dismantling is always carried out from the outside inwards. First, the door is separated from the carcase, and then the individual fittings are unscrewed from the engineered wood.
Step 1: Identify the Mechanism and Secure the Door
Before applying any tools, check how the hinge arm is attached to the cruciform mounting plate. Modern fittings feature a clip-on mounting (tool-free removal). Older models or budget standard hinges use slide-on technology secured with a fixing screw. Open the cabinet door to its maximum opening angle, typically 95° or 110°. For large cabinets, support the door with one hand or have an assistant hold it so that it does not fall and damage the veneer once the hinges are released.
Step 2: Disconnect the Hinge Arm from the Mounting Plate
Depending on the identified system, proceed as follows:
- For clip-on mounting: At the rear end of the hinge arm (towards the back of the carcase), there is a small lever or release button. Press this towards the carcase. Much like a clip-in bicycle pedal, the mechanism must be unlocked before the parts can separate. The hinge arm will release from the plate with an audible click.
- For slide-on mounting: Loosen the rear fixing screw on the hinge arm with the PZ2 screwdriver by about two to three turns. The screw does not need to be removed completely. Now pull the door and hinge arm horizontally forward, off the plate.
Important: Always disconnect the bottom hinge first, followed by the middle ones, and finally the top hinge. This allows you to maintain full control over the weight of the door.
Step 3: Remove the Hinge Cup from the Cabinet Door
Place the removed door flat on a clean, soft surface (e.g. a blanket) to prevent scratching the finish. Now loosen the two fixing screws to the left and right of the hinge cup. On standard fittings such as 35 mm concealed hinges, these screws are usually positioned at a distance of 45 mm or 52 mm from each other. Lift the cup vertically out of the recess. If the cup sits tightly, loosen it by gently wiggling the hinge arm. Never prise around the rim of the cup hole with a screwdriver, as this will chip the MDF or chipboard on the visible edge.
Step 4: Remove the Mounting Plate from the Cabinet Carcase
The cruciform mounting plate is screwed directly to the cabinet carcase. Typically, its positioning follows System 32. This means the spacing between the screw holes is exactly 32 mm, and the front row of holes is set 37 mm back from the front edge of the carcase. Align your PZ2 screwdriver precisely and slowly unscrew the fixings (frequently Euro screws with a diameter of 5 mm). Apply gentle pressure towards the plate to keep the screwdriver from slipping.
Step 5: Inspect and Clean the Drill Holes
After removal, inspect the drill holes in both the carcase and the door for damage. Frayed edges or significantly enlarged holes indicate that the screws were over-tightened during previous assembly or that the door was overloaded. Clear away any loose wood fibres.
Replacement Parts Analysis: Which Concealed Hinge Was Installed?
If you removed the hinge to replace it, you now need to determine the exact specifications of the old fitting. This ensures the new hinge fits onto the existing cruciform mounting plate or into the existing cup hole.
- Cup diameter: Measure the large hole in the door. The industry standard is 35 mm. Rarely (mostly on very lightweight or vintage furniture), you may find 26 mm.
- Overlay type: This is the most crucial factor.
- Did the door fully overlay the carcase side panel? Then you need full overlay concealed hinges.
- Did the door share the carcase side with an adjacent door (twin doors)? In that case, half overlay concealed hinges are required.
- Did the door sit flush inside the carcase side panels? Here, you are looking for inset concealed hinges.
- Opening angle: Standard doors open to around 110°. For specific applications, such as corner cabinets or units with internal drawers, 165-degree concealed hinges / cabinet hinges or wide-angle hinges are often required. Replacing like-for-like in opening angle ensures full functionality.
Avoiding Common Removal Mistakes
Even experienced fitters make mistakes when rushing to dismantle furniture hardware. Avoiding these pitfalls will save you a lot of time during reinstallation.
- Incorrect screwdriver bit: Using a PH bit on a PZ screw. The bit cannot achieve optimal grip, cams out (slips), and strips the recess. The screw will then be stuck, unable to turn in or out.
- Forced pulling: If the hinge arm on a clip-on mounting does not release immediately, people often pull with brute force. This can rip the cruciform mounting plate along with the Euro screws out of the carcase's System 32 holes. Always locate the release mechanism instead.
- Lack of door support: Loosening the mounting plate screws while the door is still hanging on the hinge puts extreme leverage on the remaining fixings. The chipboard will inevitably tear out.
- Confusing the adjustment screws: The adjustment screws (for gap alignment and depth) on the hinge arm are often loosened by mistake in the belief that they disconnect the hinge from the carcase. This merely alters the door alignment without releasing the fitting.
- Concealed hinges / cabinet hinges
- 110-degree concealed hinges / cabinet hinges
- 165-degree concealed hinges / cabinet hinges
- Full overlay concealed hinges
- Half overlay concealed hinges
- Inset concealed hinges
FAQ – Frequently Asked Questions About Concealed Hinge Removal
What should I do if the screw hole in the cabinet carcase is already stripped? If the chipboard is damaged and the screw no longer grips, the hole must be repaired. A tried-and-tested method is drilling out the hole to 8 mm or 10 mm and gluing in a matching wooden dowel. Once fully cured, drill a fresh pilot hole for the Euro screw (typically 5 mm). Alternatively, for heavy-duty applications, a threaded insert bush can be fitted.
Can I install a soft-close hinge after removal? Yes, this is usually straightforward. If you want to modernise the doors on older kitchen units, simply ensure that the cup diameter, overlay type, and mounting plate hole pattern of the replacement fittings match the old system.
Why does my hinge have no screws around the cup? Some modern fittings feature tool-free cup fixing. Here, the cup is pressed into the 35 mm hole and clamped in place via a flap mechanism (tension lever) on the hinge cup. To remove these, simply flip the lever up on the cup, and the hinge can be pulled straight out of the hole.
Do I always have to replace the mounting plate? Not necessarily. If you replace a defective hinge with an identical model from the same manufacturer, the existing plate can often remain in the carcase. However, if you switch manufacturers or hinge models (e.g. upgrading to a different soft-close mechanism), replacing the cruciform mounting plate is mandatory, as the clipping mechanisms on hinge arms are proprietary and not cross-compatible.
How do I remove stubborn screws with damaged heads? Use an accurately fitting manual screwdriver (PZ2). Apply firm body weight directly behind the screw while turning slowly. For severely damaged heads, placing a wide rubber band between the screwdriver bit and the screw head can help increase friction. In the worst case, the screw head must be carefully drilled out.
Related Categories and Replacement Fittings
Have you successfully removed your hinge and are now looking for the exact replacement? In our specialised categories, you will find fittings for every overlay type and opening angle, perfectly suited for furniture and kitchen installations: