I have been searching for good PWM plans and found a some that are worth sharing. For those who are wanting modulated overkill click this link
I went the route of so many before me with the project box from radio shack and some fan I scrounged along with Hard drive magnets. I also found a lot of DC plugs from 6 volts to 12volts with a type M plug. This is important because you can get a female adapter at Radio Shack pictured in the back right corner of my box for a clean connection.
I will post more as my project continues.....
What is the best way you all have found to balance the magnet on the fan?
"Are you gonna be working on your Brew Stuff? Yes Honey, I will be working on my Brew Stuff."