My cooling solution!!

1. Backplate: http://www.amazon.com/gp/product/B004W8AOK2/ref=oh_details_o00_s00_i00?ie=UTF8&psc=1
http://ecx.images-amazon.com/images/I/312-Z8M8bZL.jpg
The black rubber looks like shadow. It is rubber sheet for insulation. The steel backplate is very thick and sturdy.

2. Cooler: http://www.amazon.com/gp/product/B005SEZBXY/ref=oh_details_o04_s00_i00?ie=UTF8&psc=1
http://ecx.images-amazon.com/images/I/41Un70yxiNL.jpg
This horizontal cooler may be good to chill down MOSFETs.

3. MOSFET Heatsink: http://www.amazon.com/gp/product/B004CLDIHK/ref=oh_details_o02_s00_i00?ie=UTF8&psc=1
http://ecx.images-amazon.com/images/I/41py58WVcGL._SY300_.jpg
3M thermal tape is included.

4. Raspberry Pi
No need to describe

No need to buy additional screws. I could attach both of the backplate and the cooler just with screws provided by Cooler Master.

I put all these in my garage, and for the internet connection, installed a WiFi multi-bridge, which transparently connects the Raspberry Pi in the garage to the Verizon WiFi router in the living room. My garage is crazy cold these days so my chilis show about 38GHs at below 60 Celsius degree.

PhDminer, this is cool. Can you show us pics of it assembled? Where the parts go with pics?

5 chilis in my garage.
http://i40.tinypic.com/2m29kev.jpg

One of them
http://oi41.tinypic.com/308ay34.jpg

How to assemble: 1. black rubber pad, 2. 2mm steel backplate, 3. one more backplate provided by cooler master, 4. tightening only with bolt&nuts provided by cooler master
http://i43.tinypic.com/iqlxz6.jpg

You can see MOSFET heatsink in this pic.
http://i39.tinypic.com/154c9sm.jpg

Mining status. The max is more than 39GHs. Awesome!!
http://i42.tinypic.com/14vie00.png