B.C. Upholstery Zig Zag No Sag Furniture Spring (Sinuous Wire) - 11 Gauge / 140' Roll

I have no idea what possessed be to build my own couch but these springs help make it comfy. High quality and great value....also probably the only place i found them online.

Great for adding a new spring.If you don’t want to replace your classic seat springs, but wish to firm up the sweat/springs, cut this product to size, bend each end with heat (a gas stove will work with two pairs of heavy duty pliers), and add a new one side by side to your existing classic seat springs.Connect the new springs around the existing seat frame, drill new holes if required, have the wire bend facing the inward side of the seat so it doesn’t protrude up, clamp with seals used for car seat applications.Then connect the existing springs to the new side by side supporting spring(s) with thin wire, or heavy duty cable ties.The added stability is amazing :)