What is use of Desolder wick?

Solder wick is a composed of copper threads braided together. Flux is normally added to help the solder flow from where it is not supposed to be (the jumper) to the wick. Hence, solder wick is sometimes called desolder braid.

Must Read

How do you use a solder wick?

To use solder wick, simply place the end of the wick over the solder you want to remove and then place your heated solder tip over it. The braid heats up and encourages the solder to “wick” into it. When it starts to work, you will actually be able to see the solder being pulled up into the solder wick.