9 gauge (3.6mm) Double Cone Springs

Description

🌀 9 Gauge (3.6mm) Double Cone Springs

9 gauge double cone springs (3.6mm wire) are the traditional choice for creating firm, supportive seat bases in high-quality furniture. With their classic hourglass shape, they deliver both strength and resilience, making them ideal for traditional upholstery and premium modern seating.

🪑 Where to Use 9 Gauge Coil Springs

These heavier springs are designed to provide a firmer feel than lighter gauges. Typical applications include:

• Seat bases – offering strong, long-lasting support

• Large or deep seats – preventing sagging and maintaining shape over time

• Traditional furniture builds – where durability and structure are key

For a slightly softer seat, upholsterers often turn to 10 gauge double cone springs, especially on smaller chairs or sofas.

📏 Technical Details

• Gauge: 9 (3.6mm wire – heavy duty)

• Design: Double cone (hourglass) spring

• Applications: Firm seat bases in sofas and chairs

• System use: Perfect for 8-way hand-tied units in traditional upholstery

✅ Key Benefits

• Provides a firm and supportive seating platform

• Stronger than 10g and 12g alternatives

• Ideal for deep or large seating projects

• Long-lasting durability in high-use furniture

• Trusted for antique restoration and new upholstery builds