This project is a very straightforward guide for converting an old PC power supply box with a cooling fan into an AC powered, activated carbon fume extractor. After coming across a similar guide for the poor man’s fume extractor on Instructables (which consisted of little more than the gutted power supply itself), I decided to add activated carbon and a few other things to make the power supply fit my situation. The innards will vary from power supply to power supply, so I will not provide any precise measurements, just outline the steps. Down to business…