Design for a Soldering Fume Extractor from an Old CPU Cooler (and other parts)

I found a 70mm CPU cooler for a long ago defunct socket type, and hated to see it go to waste, so what better way to save some money than to spend some money on Ebay for a new project... Yeah.  Well got to tinkering with what I thought would be something simple to use the fan as a solder fume extractor and it this is what happened:

Yep, not your Dad's solder fume extractor that is.  It's got:

• TP4056 based Lithium Ion Battery management with USB charging.
• 3V to 12V boost regulator
• 3.7V-16.8V LED Lithium Battery Capacity Tester Indicator
• Illuminated latching power button
• And my old 70mm case fan
• Rear defogger
• and Power seats!

It is designed so it can either stand or sit in a more horizontal orientation (also my favored orientation lately).  Not sure how well this will work, but will bench test it first to see if it will be worth while once the parts get in from China.  I'm planning to use an off the shelf single 18650 battery holder for this since the contacts to DIY a holder are either too kludgey or too damn expensive.  The battery and holder in the pics are just standing in for now - they are models that I got off Thingiverse - here and here. (If I ever get my printer to spit out a decent print then this will be next up after the RE-ARM case which is on my 4th attempt at printing currently.