How to choose right size coil spring for seats

Coil springs, also known as biconical springs, play a crucial role in providing comfort, support, and shape to furniture such as seats, backs, and arms. These springs come in a variety of sizes and gauges, allowing for customization based on specific needs.

When determining the appropriate gauge and size of coil springs for your seat, it's important to consider the intended use and desired level of support. Generally, a 9 gauge (9g) coil spring is recommended for the seat, as it offers greater strength and durability. On the other hand, a slightly lighter 10 gauge (10g) coil spring is commonly used for the back, focusing more on providing comfort.

The height of the coil springs will vary depending on the furniture piece they are being installed in. As a useful guideline, it is advisable to add approximately 10 cm to the height of the frame on which the springs will rest. This additional height accounts for the proper alignment and positioning of the springs, ensuring optimal performance and comfort.

Coil springs are typically positioned beneath the furniture frame and are secured onto a firm base made of jute webbing. Achieving a tight and sturdy base is essential, and professionals employ a web stretcher tool to accomplish this. When properly installed, the jute webbing should produce a resonant drum-like sound when lightly tapped.

To firmly attach the coil springs to the webbing, strong jute twine is used for sewing. This binding process serves to secure the springs to the frame and keep them compressed, contributing to the overall stability and longevity of the furniture piece.

Coil springs, also referred to as biconical springs, are integral components of furniture design, offering comfort, support, and shape. By carefully selecting the appropriate gauge and size, and ensuring proper installation and attachment, coil springs contribute to the overall functionality and longevity of the furniture they are incorporated into.