How to Make Kitchen Cabinets: A Hardware Guide
Building your own kitchen units from scratch allows you to tailor storage precisely to your space while ensuring robust build quality. While cutting your sheet material accurately is fundamental, the strength and functionality of the final unit depend entirely on the components holding it together. Understanding how to make kitchen cabinets requires a solid grasp of the structural hardware, hinge systems, and drawer components that turn basic melamine or plywood panels into durable, working furniture.
Selecting the Right Carcass Connectors
The foundation of any kitchen base or wall unit is a rigid carcass. Standard UK kitchen units are typically built using 18 mm MFC (melamine-faced chipboard) or birch plywood. To join these panels securely, trade professionals and experienced DIYers rely on specific structural fixings:
- Cam and Dowel Fittings: Ideal for concealed joints. The steel pin screws into the face of one panel, while the cam lock sits in a drilled recess in the adjoining edge, pulling the joint tight when turned.
- Confirmat Screws: These heavy-duty, single-thread steel screws act as steel dowels. They require a stepped pilot drill bit and provide massive shear strength, making them excellent for base unit assembly.
- Wooden Dowels with Wood Glue: Pairing 8 mm fluted wooden dowels with PVA glue creates a permanent, ultra-sturdy joint when combined with mechanical fixings.
- Corner Brackets and Gussets: Plastic or zinc-plated steel corner blocks add internal diagonal bracing and can double as mounting points for worktops.
Hinges and Mounting Plates for Cabinet Doors
Once your carcass is square, hanging the doors requires concealed cup hinges (often called Euro hinges). For standard kitchen cupboards, the industry standard is a 35 mm hinge cup drilled into the back of the door, typically 21.5 mm to 22.5 mm in from the edge.
Choosing the Correct Hinge Overlay
When learning how to make kitchen cabinets, matching the hinge type to your carcass design is critical:
- Full Overlay: The door sits directly in front of the carcass side, concealing the 18 mm panel thickness almost entirely. This is the most common setup in modern UK kitchens.
- Half Overlay: Used where two doors share a single central dividing panel, each door covering half the carcass edge.
- Inset: The door sits completely flush inside the carcass frame, exposing the outer edge of the unit.
Opting for hinges with integrated soft-close dampening and 3-way cam adjustment makes levelling your doors much simpler after installation.
Drawer Runners and Sizing
Modern kitchen drawers need to carry significant weight, from heavy cast-iron pans to stacks of crockery. Choosing the right drawer runners ensures smooth operation under load:
- Ball Bearing Runners: Side-mounted and cost-effective, offering high load capacities (often 35 kg to 45 kg) and full extension so you can reach items at the very back.
- Undermount Soft-Close Runners: Concealed completely beneath the drawer box for a clean, premium look. These require precise drawer box dimensions, as the bottom of the drawer must be recessed to accommodate the mechanism.
Base Unit Levelling with Plinth Legs
Kitchen floors are rarely perfectly level. Rather than scribing the carcass sides directly to an uneven floor, kitchen units are mounted on adjustable plinth legs. These heavy-duty plastic legs screw into the base panel of the unit and allow you to wind the foot up or down by 20 mm to 30 mm to achieve a dead-level run. Once the cabinets are joined together and levelled, plastic or metal plinth clips attach directly to the legs, allowing you to snap your decorative plinth board into place seamlessly.
Fitting Back Panels and Wall Brackets
The back panel provides essential diagonal rigidity to keep the cabinet square. A 6 mm or 9 mm back panel can be rebated into the carcass sides or slotted into a pre-cut groove. For wall units, heavy-duty concealed hanging brackets should be fitted in the top rear corners. These hook onto a steel wall rail or fixing plates, allowing front-accessible screw adjustment to pull the unit level and tight against the wall.