Cardboard Baffles/Funnels

[rampancy]

This sort of dovetails with my earlier G4noise thread, but...

Has anyone tried using cardboard baffles or funnel-type structures to aid in cooling for their MDD? I remember seeing that it was a popular mod over at the G4noise forums. Do any of the experts have an opinion on their effectiveness and use?

[aquamac]

I haven't actually done this, but providing you can get some cool air in, it seems like a good idea. I had toyed with deflecting the air from my top mounted MDD Fan towards the power supply, but it seems to be doing such a good job of clearing air from the graphics card that I ended up leaving it alone.