To fold an integrated circuit chip, there are generally two ways, with a soldering iron, or with a heat gun. By comparison, it's definitely better to use a heat gun. Because the lead foot of the integrated circuit chip is very dense and the spacing is small, it is easy to break the copper skin on the circuit board with a soldering iron. The heat gun temperature can be adjusted, and there is no direct contact with the chip, it is easy to remove the chip.