Solder fume filter

Starting to increase working and tinkering with electronic devices I'm using my solder iron pretty often for a couple of weeks now. Soldering means to be exposed to the fumes from the tin and flux which irritated my eyes and caused some headaches.
So i came up with this soldering fume filter.

You need a cheap computer case cooling fan, a 12V power supply and an activated carbon filter.

I designed this thing for a 140mm fan and a filter thickness of 5mm (I actually had to slice the origina