Conductive thread is a type of thread that can carry current in the same way that wires can. Just like we'd do with cables or jumper wires, we can use it to create circuits. The difference is that it's extremely flexible, as we would expect from standard threads used in the production of textiles. This allows us to connect electrical components together by sewing thread in between them, creating flexible circuits that require no soldering!
These small bobbins are a great addition to wearable electronics projects, without the upfront cost of buying an entire spool. 10m (~30ft) of thread is enough to get a simple design stitched onto your shirt, backpack or hat.
This thread is spun from stainless steel fibers and doesn't have a Nylon core. This means that whereas it isn't easy to solder (because it's stainless), it won't burn up when you touch it with a soldering iron.
We recommend waxing the thread for hand sewing to avoid it becoming 'hairy'. Since waxing is impractical in machine-sewing applications, avoid sewing close connections by machine as the 'hairs' could potentially create short circuits across small distances.