IKEA KIVIK Sofa – Leg Adapter Mount

IKEA KIVIK Sofa – Leg Adapter Mount

This adapter is designed to make it easy to install aftermarket sofa legs on the IKEA KIVIK sofa.
It works in combination with the metal square mounting plates that can be bought from Amazon with replacement legs, ensuring the threaded hole is perfectly centered and aligned, so all legs install uniformly.

How It Works

The 3D-printed adapter is placed on the underside of the sofa frame, with the threaded insert facing upward into the sofa.

The metal square mounting plate is then installed on the top side of the adapter flange, using the three screw holes to secure everything in place.

This setup allows the M8 threaded rod of the leg to screw straight into the adapter, perfectly aligned.

The adapter not only aligns the leg position but also reinforces the mounting point, making the connection more solid and stable than using just the plate alone.

Features

Centers the M8 threaded insert so all legs mount evenly.

Reinforces load-bearing area for added strength.

Dimensions:

Adapter thickness: 15 mm

Flange thickness: 6 mm

Flange diameter: 50 mm

Screw holes: Ø 4.5 mm, evenly spaced (x3).

Compatible with M8 legs (standard aftermarket size).

Printing Notes

Suggested material: PETG or ABS (for toughness).

Infill: 40% or higher recommended.

Layer height: 0.2 mm or finer for crisp threads.

Print orientation: flat on the flange for maximum strength.

Files

STL included – ready to print.

OpenSCAD source – fully parametric, customize if needed.

⚠ Requires the BOSL library (threading.scad) to generate threads.

Disclaimer

This model is provided as-is.
Fitment and durability will depend on your print settings, material, and installation. Always check fit and stability before use.t your own risk.