How to Build Kitchen Cabinets: Essential Hardware Guide
Building your own kitchen carcasses gives you total control over the layout, dimensions, and storage capacity of your space. While cutting your panels accurately from 18 mm MFC or plywood is vital, the strength, alignment, and longevity of the final installation come down to the fittings you choose. If you want to learn how to build kitchen cabinets that stand the test of time, understanding the core hardware requirements is the most critical first step.
1. Carcass Assembly Fixings and Connectors
A rigid cabinet carcass relies on strong joints that can support the weight of heavy worktops and contents. When learning how to build kitchen cabinets, you will typically choose between three reliable jointing methods:
- Cam and Dowel Fittings: The standard across flat-pack cabinetry. They allow for hidden, exceptionally tight joints that can be dismantled if necessary.
- Confirmat Screws: Thick, coarse-threaded direct-assembly screws. They require a stepped pilot hole but provide immense shear strength in chipboard and MDF.
- Pocket Hole Screws with Wood Dowels: An accessible method for DIYers using timber face frames or solid carcass components, often combined with PVA glue for extra permanence.
2. Adjustable Cabinet Legs and Plinth Clips
Uneven floors are common in British homes, making direct floor-standing base units impractical. Modern kitchen carcasses sit on heavy-duty, adjustable plastic or metal legs.
Key considerations when installing cabinet legs include:
- Load capacity: Ensure the legs can carry the combined weight of the carcass, solid stone or timber worktops, and loaded shelves.
- Height adjustability: Standard base cabinet legs adjust between 100 mm and 150 mm, allowing you to establish a perfectly level plane across an entire run of units.
- Plinth clips: Choose legs compatible with clip-on brackets to snap your kickboards directly to the legs, keeping them secure yet removable for service access.
3. Concealed Hinges and Mounting Plates
Standard kitchen doors rely on European concealed hinges (often called cup hinges). These fit into a standard 35 mm drilled recess on the back of the door and mount to a plate inside the carcass.
When choosing hinges, select the right crank angle for your design:
- Full Overlay: The door sits entirely over the carcass side edge (the most common modern design).
- Half Overlay: Used on shared central dividing panels where two adjacent doors meet.
- Inset: The door sits flush inside the carcass frame for a traditional, bespoke aesthetic.
Always opt for hinges with three-way adjustment (height, depth, and side-to-side) to ensure your door gaps remain consistent and square.
4. Drawer Runners and Slide Systems
Drawers handle continuous movement and heavy loads. Choosing the right runners during the build stage prevents sagging and jamming later on.
| Runner Type | Typical Load | Best Used For |
|---|---|---|
| Single Extension Ball Bearing | 15–25 kg | Cutlery drawers, shallow storage |
| Full Extension Soft-Close | 30–45 kg | Standard base unit drawers, pan drawers |
| Heavy-Duty Undermount | 40–70 kg | Deep larders, solid timber drawer boxes |
Ensure you allow the exact clearance required by your chosen slides (commonly 12.7 mm on each side for side-mounted runners) when sizing your drawer boxes.
5. Hanging Brackets for Wall Cabinets
Wall carcasses require dedicated hanging brackets fitted inside the top rear corners. Modern concealed cabinet hangers hook onto a wall-mounted steel suspension rail. They provide screw-driven adjustment for height and depth, making it straightforward to pull the carcass tight to the wall and align it flush with neighbouring units.