The most reliable wire connection without a soldering iron


If you have a need to make a responsible connection of wires, and the soldering iron is not at hand, or there is no way to power it, then this little trick will come in handy. After all, the case does not choose when to be taken by surprise and you need to be prepared for everything. An ordinary gas lighter will be used as a soldering iron, so the twist will still be soldered and the strength of the wire will be exactly the same as that of an integral segment.

Will need


  • Gas lighter.
  • Heat-shrink tubing. You can buy in a store, but I ordered in China - a set of heat shrink tubes
  • Tubular solder with rosin. If you are not familiar, this is a thin solder in the form of a tube wound around a reel. And in the center of the tube there is a strip with rosin or an active flux, ordered HERE.

We connect the wires securely without a soldering iron


We take a piece of heat-shrink tube with a length of about 50 mm and put it on one of the two wires.

Then, using a stripper, wire cutter or knife, we clean 30 mm of insulation from each wiring.

Disheveled veins twist together.

Now we wind bare veins on each other. We put the cross crosswise and wind the half of the core to the right, and the right to the left.

It should be like this.

Soldering without a soldering iron


We take solder, heat the twist with a lighter. Just don’t bring it directly into the open flame, but without touching it a bit - there’s nothing to do with excessive temperature.

We touch the solder to twist and since it is sufficiently heated, the solder melts and spreads excellently on it.

As a result, the connection will be no worse than soldered with a soldering iron.

I will repeat from another angle. We heat with a lighter and bring solder.

It spreads excellently on copper veins.

The result is excellent.

We move the heat shrink, dressed earlier, to the middle of the soldered twist.

And warm up with a flame of a lighter.

As a result, you have a very reliable, durable connection between two wires.

Here is a way to help you out when there is no soldering iron at hand.
  • Tip number 1: if the wire is not the first freshness, then it must first be greased with solder paste or liquid flux.
  • Tip # 2: If the wire is thick, then tubular solder with flux can be wound in a chaotic manner directly from above to twist. Then heat with a lighter and everything will spread by itself.

I am personally very pleased with the quality of Chinese solder. Compared to our PIC 61, it is earth and sky. But, as you know, there are no comrades for taste and cetus. Good luck!