Retrofitting Magnetic Catches as Door Latches: Equipping Handleless Cabinet Fronts with Push-to-Open Systems

A magnetic catch combined with a push-to-open mechanism allows handleless opening of cabinet doors with a gentle press on the front, whereby a spring-loaded pin pushes the door open and a magnet holds it securely when closed.

Converting classic cabinet fronts to a handleless design requires precise coordination between fittings. Simply removing handles is not enough. The mechanical challenge lies in overcoming the holding force of existing hinges and precisely adjusting the release gap. The mechanism works like clockwork – if the release travel is off by even a millimetre, the entire system jams or the door will not close flush.

This guide is aimed at fitters and experienced DIYers who want to professionally retrofit cabinets with a push-to-open system. With careful workmanship, installation takes around 15 to 20 minutes per front.

The Technical Prerequisite: The Right Hinge

Before installing a push latch, the type of existing hinges must be checked. A standard concealed hinge usually features an integrated self-closing mechanism (a spring that pulls the door shut during the last few centimetres of travel).

However, a push-to-open mechanism strictly requires unsprung hinges (hinges without a closing spring) or hinges with an inverse spring (which push the door open). If a push latch is fitted against a heavily sprung standard hinge, the opposing forces cancel each other out. After release, the door will not open wide enough to grasp with your fingers.

For a successful conversion, it is recommended to replace existing hinges with unsprung concealed hinges / cabinet hinges. The opening angle can remain unchanged; concealed hinges / cabinet hinges 110 degrees are typical for standard carcasses.

Required Tools and Materials

The following components and tools are needed for professional retrofitting:

Materials:

• Magnetic catch (push latch with magnetic tip) including mounting plate or as a drill-in version. Suitable models can be found in the magnetic catches range.
• Counterplate (usually a small steel plate for screwing or sticking).
• Chipboard screws (countersunk, e.g. 3 x 15 mm or 3.5 x 15 mm).

Tools:

• Cordless screwdriver with PZ2 bit (Pozidriv).
• Wood drill bits (2 mm for pilot holes, 10 mm for the drill-in version).
• Tape measure or folding rule.
• Try square.
• Pencil.
• Bradawl (optional, for centring screw holes).

Step-by-Step Guide: Installing Magnetic Catches

There are two common mounting methods for push latches: surface-mounted using an adapter plate (cruciform or linear plate) and drill-in mounting, where the cylinder is recessed directly into the edge of the carcass. This guide focuses on the surface-mounted method, as it is the most practical for retrofitting.

1. Determine the Position on the Carcass

The optimal location for the catch is on the opening side of the door, directly opposite the hinges. On tall doors (such as wardrobes), position the catch roughly at hand height where pressure will naturally be applied to the front. The distance from the front edge of the carcass depends on the specific model. Usually, the front edge of the mounting plate sits flush with the carcass edge, or set back by the door thickness (typically 16 mm or 19 mm). Check the technical data sheet of the fitting for exact millimetre measurements.

2. Screw on the Mounting Plate

1. Position the mounting plate at the marked spot and align it square using a try square.
2. Lightly mark the pilot holes using a bradawl.
3. Pre-drill to a maximum depth of 5 mm using a 2 mm wood drill bit to prevent the chipboard from tearing out.
4. Secure the plate with chipboard screws, taking care not to overtighten.

3. Attach the Catch

Slide or clip the cylindrical magnetic catch onto the mounting plate until it audibly clicks into place. On some systems, the cylinder slides into the plate from the front.

4. Fit the Counterplate to the Door Front

For the magnet to hold the door firmly closed, a metal counterplate must be fitted to the inside of the door.

1. Extend the catch on the carcass into its forward position.
2. Apply a dab of grease, chalk, or a drop of paint to the magnetic tip.
3. Close the cabinet door and press lightly. The paint will transfer to the inner face of the door, marking the exact centre for the counterplate.
4. Fasten the counterplate at this mark using a short countersunk screw (e.g. 3 x 13 mm). Alternatively, self-adhesive counterplates can be used on very thin fronts.

5. Adjust the Release Gap

For the push-to-open mechanism to trigger, the door must have clearance to be pressed inwards by several millimetres. If the door rests tight against the carcass, the mechanism will jam. Turning the tip of the catch adjusts its length. Set the gap between the carcass and the closed front to exactly 2.5 mm to 3.0 mm.

Special Case: Converting Drawers to Push-to-Open

While hinged doors can be retrofitted simply by adding a catch, this approach does not work for drawers. A drawer has significantly higher dead weight and requires synchronised release on both sides. A single catch in the middle would cause the drawer to twist and jam when pressed.

To achieve a handleless look with drawers, the complete set of runners must be replaced. Special push to open drawer runners are designed for this purpose, with spring-loaded release mechanisms built directly into the cabinet profiles.

Take care not to confuse these with soft-close systems. Soft close drawer runners use a hydraulic damper that slows the drawer and pulls it gently shut, whereas a push mechanism propels the drawer outward. Combining both functions within a purely mechanical runner is technically complex and uncommon in standard retrofits. When planning new furniture projects from scratch, choose fully integrated drawer systems engineered with the required opening mechanisms.

Avoiding Common Installation Mistakes

Mistake 1: Combining with soft-close hinges The most common error during retrofits is keeping damped hinges. Soft close concealed hinges / cabinet hinges brake the door and pull it quietly closed. However, a push latch requires free inward travel within that exact range to trip the mechanism. The soft-close damping blocks the push stroke. Result: the door cannot be pushed in and will not release.

Mistake 2: Insufficient gap clearance If the catch tip is screwed in too far, the door sits tight against the carcass. You lose the necessary 3 mm inward travel required to trip the catch, so the mechanism fails to release. Remedy this by unscrewing the magnetic tip slightly.

Mistake 3: Incorrect height placement If a catch is fitted at the very top of a 2000 mm high cabinet door, but pressure is applied in the centre, the material (especially MDF or thin chipboard) will flex. The force never reaches the catch. Always install the fitting at the height where the door is operated in daily use.

Mistake 4: Missing counterplate on wooden doors A magnetic catch requires a metal counter-surface to hold. If the counterplate is omitted, the pin will push the door open, but nothing keeps it shut. With unsprung hinges, the door will permanently remain slightly ajar.

Frequently Asked Questions (FAQ)

What opening angle do hinges require for push-to-open? The opening angle of the hinge does not affect the push-release mechanism. The key requirement is simply that the hinge has no self-closing spring. For wide-opening doors, such as those clearing internal drawers, unsprung versions of concealed hinges / cabinet hinges 155 degrees work reliably.

How much force (in Newtons) does a push latch require? Standard cabinet doors do not require specific calculations in Newtons unlike gas struts. The coil springs in standard push catches are calibrated to push fronts up to around 600 mm in width and 2000 mm in height open by several centimetres with ease. For exceptionally heavy solid-wood doors, use two catches (top and bottom) or long-stroke catches with an ejection travel of up to 40 mm.

Can push-to-open be used on overlay and inset doors? Yes. The principle works across all door types (full overlay, half overlay, and inset). For inset doors, simply position the mounting plate further back according to the carcass depth so that the 3 mm gap to the front edge is maintained.