This cheap & simple instructable will whisk away the fumes so you can work in a nice, clean environment.
These retail for several hundred dollars here in Australia, so you will save yourself a fortune.
Most of the parts can be salvaged from stuff.
Step 1: Parts & Tools.
a plank of wood (anything works. Ply, MDF, whatever you have lying around)
2 fans (you can use more if necessary)
A Switch (I used a fan controller because i was going to make them switch on and off individually, but i
decided against it. i still used it though. Makes it look cool. any SPST will work)
A 10~14 v supply (DC, whatever amps your fans are.)
Flat Blade screwdriver
Step 2: Marking Everything.
Step 3: Modding the Switch
Pull the knob off.
Then, remove all the stuff coming from the back of the switch. You should end up with something like below. if not, I can't help you.
You will have Common (or C) 1 (or M100) 2 and 3.
Step 4: Drill Vent Holes
Afterwards, attach the switch.
Step 5: Fans
Just line them up with your markings, and spin the blades to make sure they don't hit on any oddball wood splinters. If so, clean up with a file.
Drill holes respective to the fan power wires. then, bolt everything down.
Work out your plug pack polarity & and mark that.
Flip it over.
Step 6: Wiring
Attach the positive coming from the plugpack to the common (or C) on the switch.
If you want your fan to come on in all 3 positions, Just link M100, 2 & 3 together with the fan positives.
If you are using a toggle switch or similar, Attach the negatives together as explained. then, attach the plug pack positive to the Common pin and the fan positives to the other side.
I hope the images help.
Step 7: Done!
Enjoy a clean environment!!!