Look no further, you have found one of the best conductive threads on the market today. Our supplier has done a lot of research and this is the highest quality you can find for a reasonable price.
The thread has a resistance of approximately 0.65 ohm / cm, or 20 ohm / foot. This is quite sufficient for powering LEDs over quite large distances. Resistance does not vary significantly from one length of thread to the next, so you should be able to use this thread without concern for “dead” sections .
The thread has a breaking strain of around 9.3 pounds (4.2 kilos). It comprises roughly 96 individual filaments, each coated with a micron-thick layer of natural silver. In construction, 16 of these filaments are wound together to form an initial twist; two of these twists are then twisted together, and finally three of these twists are combined to form the finished thread.
In thread terms, it’s around 18 denier. In terms understandable to me, it’s a little heavier than a regular sewing thread, but not as heavy as an upholstery thread. It can be sewn on most domestic sewing machines using either a regular needle or the next size up.
This thread does not fray. As far as I can tell, there are no loose ends of filaments except where they have been cut. The filaments are very smooth, so there are no fine tendrils as you will find with a cotton thread. This used to result in a lack of cohesion in the thread, resulting in “bunching” at the needle when machine sewing; this is no longer the case.
Here’s what the thread looks like up close:
Nothing special to note, other than it can be difficult to thread a needle. I have found that a wire loop needle threader helps a lot. Alternatively, you can use a dental floss threader which you may find at your local drug store.These work well with a sewing machine too.
You may need a needle with a slightly larger hole than a regular needle. This depends more than anything on the sewing machine, so if you have [problems with a regular needlwe, try a larger.
Most of the time you will want conductive thread only on one side of the fabric, so, If you prefer, you can put the conductive thread on the lower bobbin and sew with the conductive face down.
The thread has a synthetic fibre core which will melt if you push too much current through it. Shorting across the terminals of a standard 9V battery will cause melt-down in only a few seconds.
Consequently, the thread is not very good with solder. I have tried it, and it’s feasible but barely so . There are, fortunately, other ways to make good electrical connections. These include sewing, tying knots, conductive epoxy and crimping beads. If you check out my Ideas page, you’ll find links to many DIY projects that will help with this.