Norden Gateleg Table Extended to 1.9 Metres with Frosta Legs and a Karlby Leaf

The Norden gateleg from IKEA depends on two swinging solid-birch gate legs under its drop leaves. Those legs are sized for the normal leaf, a few plates, and a couple of elbows at dinner. Their job description does not stretch to a 40 cm mid-span addition with six people leaning toward the centre of the table.

Start with the closed body. The fixed centre panel is roughly 26 cm wide, and each raised leaf adds about 63 cm. With both leaves up, the table reaches the published 152 cm. A 190 cm version needs a rigid insert between the fixed panel and one leaf, supported from the floor instead of hanging from the original hinge line.

Give the insert its own legs

A drop leaf sends its load back through the hinge and into the main frame. Once a second span is added in series, the original hinge line starts acting like a lever. Pressing down on the far edge of a 40 cm insert multiplies the force at the gate hinge by the arm ratio, close to 2.5 to 1 on this build.

That leverage is the reason brackets alone usually leave a sagging seam and a visible step between surfaces. The underside can look busy with metal, while the tabletop still moves where diners notice it.

Two legs from a Frosta stool solve the load path more directly. The Frosta is IKEA’s stackable birch stool sold for a few euros, and its four splayed legs unscrew from the seat. Each one is a solid bent-birch member about 45 cm long with a pre-drilled mounting plate.

Mount two Frosta legs vertically below the leading edge of the insert. They carry the added weight down to the floor, leaving the original gate legs to steady the section from side to side. Set the two Frosta legs 30 cm apart and toe them inward by five degrees, so a passing knee is less likely to knock them out of true.

Cut the Karlby leaf to the Norden width

Karlby worktops come in oak and walnut veneer over a chipboard core. They are 3.8 cm thick and sold in lengths up to 246 cm. That thickness is useful because the Norden top is about 3 cm, so the added piece can be planed down or packed with spacers until the surfaces sit nearly flush.

Buy the shortest Karlby length that covers the gap plus 10 cm for trimming. For a 40 cm insert, the cut piece is roughly 40 cm by 74 cm, matching the width of the Norden leaf.

Use a fine-tooth blade on the chipboard core. A 165 mm circular saw blade with at least 40 teeth is a sensible minimum. Run masking tape along the cut line, then score the veneer first with a utility knife to reduce chipping as the saw exits the top face.

The exposed core edges need sealing after the cut. IKEA sells an iron-on Karlby edging veneer roll that covers the two cut ends. On the long edge facing the diner, solid oak lipping glued and clamped gives a cleaner edge than veneer and takes the wear from cutlery and plates.

Colour matching is the awkward part of the finished table. Norden is solid birch with a clear finish that warms and yellows over time. Karlby oak veneer reads cooler, with a more open grain. Under a tablecloth, the difference disappears for practical purposes. With the top bare, the insert will read as a separate board.

A single coat of warm-toned hardwax oil on the Karlby closes some of that visual gap. It does not make oak veneer and aged birch look like the same timber.

Use dowels at the seam

The joint between the fixed Norden panel and the Karlby insert has to keep the top surfaces level and resist sideways racking when someone leans on a corner. Steel angle brackets screwed into chipboard are weak under repeated shear because the screw threads can strip the core.

Use 8 mm hardwood dowels. Mark three positions along the mating edge, then drill 30 mm deep into both the Norden panel and the Karlby core. A doweling jig keeps the holes square, which matters more here than speed.

Glue the dowels with PVA wood adhesive. The dowels spread the load into a longer bearing surface through the edge of the joint. On the underside, add one flat steel mending plate across the seam as extra protection against a vertical step. Drill pilot holes and use 4 x 30 mm screws so the chipboard does not blow out.

Dry-fit the full span

Assemble the table before any glue is opened. Lay a 1.9 metre straightedge across the top and look for daylight at both seams.

What it costs, and what the table becomes

A worked example keeps the budget clear. The Norden gateleg table runs around 199 euros new. A used one from a local resale board is often 60 to 90 euros in usable condition.

A single Frosta stool is roughly 15 euros and gives four legs, so the build uses half of one stool. A 186 cm Karlby oak worktop is generally in the region of 90 to 130 euros, depending on stock. The insert takes less than a third of that worktop, leaving an offcut for a shelf or another small project. Dowels, glue, edging veneer, and a mending plate add maybe 20 euros.

If the base table is already in the room, the extension adds about 100 to 150 euros. A factory-made 1.9 metre solid oak extending dining table starts well above 600 euros at most retailers, so the saving is real. The trade is weight and storage. With the insert fitted, the finished piece lands somewhere near 32 to 38 kg, and it no longer folds down to the slim profile that makes the Norden attractive in a small flat. The result is a semi-fixed dining table made from a folding one.

The time cost is also real. Cutting and edging the Karlby cleanly, drilling accurate dowel holes with a jig, and finishing the oak to a tolerable colour match will take an afternoon of careful work. Most failures start at the dowel layout: a seam that is 2 mm out at the joint reads as 2 mm out across the whole 1.9 metre span once light runs along the tabletop.

Where wear shows first

After six months, the Frosta leg mounting plates deserve a close look. The short screws supplied with the stool were sized for a stool seat, where the loading is different from the repeated sideways nudges under a dining table. Chair legs and knees gradually test those fixings. Swapping them for slightly longer 5 x 40 mm screws into fresh pilot holes, plus a dab of thread-locking compound, stops the slow loosening that can turn a firm table into a wobbly one by the following winter.

The cut Karlby ends need more care than the factory edges. Iron-on edging covers the appearance of the chipboard core, while moisture can still find an unsealed corner after a spilled glass of water. A hardwax-oiled edge gives the cut a better chance, though the material underneath remains chipboard. Once the veneer line opens at a corner, the neat oak edge and the chipboard core are visible in the same glance.