A soldering iron is a hand tool used in soldering. It supplies heat to melt solder so that it can flow into the joint between two workpieces. A soldering iron is composed of a heated metal tip and an insulated handle.
Safety
1. Never touch the element of the soldering iron....400°C!
2. Hold wires to be heated with tweezers or clamps.
3. Keep the cleaning sponge wet during use.
4. Always return the soldering iron to its stand when not in use. Never put it down on the workbench.
5. Turn unit off and unplug when not in use.
Safety
https://safety.eng.cam.ac.uk/safe-working/copy_of_soldering-safety