My thought ramblings on this today would that I would leave the PSU exhaust hole, and also cut a hole in the top of the PSU and case. Also removing as much of the metal case of the PSU as possible. Would think that with only those two exhaust holes, and three intake fans, it could possibly manage enough airflow velocity (venturi effect) to keep the PSU cool without its own fan.
I've backed off thoughts of watercooling for now, but I see how that could also be incorporated, having the exhaust vents behind a radiator.
I'm not too worried about having the holes up top though, with my computers under my desk, they never get anything set upon them, and there's not enough clearance for the cat to think about that space (unlike atop my monitors).
Oh, and very cool post on tin snips. I have spent plenty of time working with metal. Having a good friend who is a fabricator/welder can do that. Too bad he moved across country, I rather miss having access to his welders, vertical mill, lathes, and other goodies. I feel bad that I almost literally hacked out my fan grills with some basic wire cutters.
Haven't even filed down the remnants.
- just had a wierd thought of putting the computers OUTSIDE and running the cables in thru my window