Great answer, Slight additions mixed in...

From: "Brad Loomis"

> You can spin the fan blades fast enough with the can-o-air to have them
> disengage. I know, done it. They aren't designed to turn at the kind of rpm
> one can subject them to with a stream of air.

Stop them from spinning by holding them with the "Q"tip. <grin>

> Be careful, but DO clean your fans, Q-tips are a great suggestion then a
> quick blast to move the dirt out.

Remember the blast of air might be super cold too...
Don't shoot any electronic part that might be hot, or freeze anything
and then restore power quickly. (Avoid thermal shocks...)

                                             Rick Glazier

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