Never do this. I mean it. It is dangerous, it is wrong, you may get hurt, your tools, your stuff or your house may be damaged. I did this because I didn’t have proper tools at hand and it was a do or die weekend situation. You must use proper air soldering and desoldering tools. In Youtube you can find excellent videos on how to do this in a better manner.
Bear in mind, I’m not suggesting you do this either, for all the reasons listed above. However, it is an interesting process to observe.