Electricians have been hiding this for years! Insert the USB cable into the pencil and be surprised

Electricians hid it for years! Connect the USB cable to the pencil and thank me. In this video, I will show you how to make a soldering iron from a simple pencil at home. DIY 12V soldering iron. What I used: 1. Pencil 2. Solder 3. A little wire 4. Power supply: DC 12V. 5. Simple tools