How to assemble an extendable dining table

An extendable table has a sliding or butterfly mechanism under the top and a leaf that must line up flush with both halves. The legs bolt on as with any table, but the runners and leaf alignment decide whether it opens smoothly for years or sticks every time.

Time
about 1 h 30 min
Difficulty
Moderate
People
2 people
Steps
7

Tools needed

  • Allen key (supplied)
  • Spanner or socket set
  • Cross-head screwdriver
  • Soft mallet

Parts to check first

Before you start, lay everything out on a soft surface (the flattened box works) and check it against the parts list in your manual.

  • Two tabletop halves on runners
  • Extension leaf or folding butterfly leaf
  • Legs with corner brackets
  • Alignment pins and top latches
  • Bolts, washers and screws

Step by step

  1. Step 1: With a helper, turn the joined top upside down onto a blanket; do not separate the halves, as the runners are often factory-set.

  2. Step 2: Bolt each leg into its corner bracket, snug but not fully tight, so the legs can settle as the frame is loaded.

  3. Step 3: Turn the table upright with two people, lifting by the frame rather than the top halves, which can slide apart.

  4. Step 4: Pull the halves open and fit the leaf or unfold the butterfly leaf, pushing its alignment pins into the holes in both halves.

  5. Step 5: Close the halves onto the leaf and check the joints: if one side is higher, adjust the alignment pins or runner stops as the manual shows.

  6. Step 6: Engage the top latches underneath so the halves cannot drift apart during meals.

  7. Step 7: Fully tighten the leg bolts, then open and close the table twice to check it runs without binding.

Common mistakes

  • Lifting the table by the top halves so they slide open and pinch fingers.
  • Forcing a stiff runner instead of checking for a transit screw or packing block left in it.
  • Leaving the latches open, so plates drift apart at the seam.

Safety notes

  • Keep fingers clear of the runners and the seam when opening or closing the table.
  • Extended tables are heavy and long; move them closed and with two people.

This is general guidance for this type of product. Your product's own manual comes first: follow its order, fittings and torque values where they differ from this page.

Updated 2026-09-30