Fan Mount?

[Polygonhell]

I am going to do some PLA printing, and I was wondering if anyone has mounted a fan on the extruder yet?
I have a 40mm fan I was going to use, but I can't see an obvious good way to mount it.

[ylexot]

I saw this thread that might help. It's for a 50mm fan, but you might be able to mod it.
http://forum.seemecnc.com/viewtopic.php?f=36&t=872