Yup been using like this for years now also no problem. Just make sure you ground the rig properly. After the combination of compressed can air and vacuum cleaner, just use the anti-static brush.

owh... johorian here.
will ask my hardware shop.. hope they got it here

Hi ya I thought you're from An field in KL

i got my pc almost 3 yrs ago and now its full of dust. normally ppl will take all the component inside one by one clean it thoroughly. however, i dun wish to take out all the component as some ppl said "before you take out all the component for cleaning, the pc works perfectly fine, but after u take out all component and clean it and put back inside chasis, the pc got problem like slow on turning on, cannot start, performance slow...etc...or any similar problem". So, in order to prevent this and din want to take the risk, can anyone suggest alternative solution to remove the dust inside chasis without taking out the component?

Solution that i can think of:
1-> use blower(not sure the name is correct or not)
2-> send to shops or any services that provide cleaning (preferably not to choose this option)
3-> get suggestions from this thread from ppl that have experienced/tried to clean the chasis without taking out the component.

thx in advance.

i use hair dryer to blow all the dust out and also using paint brush 

hair dryer can, but suitable if the dust is TOO THICK. it can't remove all the dust, but then can use brush to remove. useful for area like fan, HDD, DVD slot, but not good for HSF. the metal will become too hot to touch.

or u can go to camera @ usual supermarket like Giant and Carrefour, search for DSLR cleaning kit. there's a blower, not as good as compressed air, but useful enough. not more than RM30 i think.

search for set of watercolour brush flat head, cheap one enough, around RM 3-5.

one advice...

google more how to deassemble and reassemble PC hardware coz when u don't remove the component, u will not learn, and the dust will not remove completely. there's a hefty price for learning this, me myself already blow 1 PSU, damage 1 GC, 2 mobo, 1 proc. mostly my own hardware plus my friend's. sounds scary but once you know the knowledge, you will see yourself how useful it can do for u.

hair dryer?
the air blow is strong enuf to blow the dust off?
hair dryer only produce hot air and slow air flow.
quite curious how u clean ur pc component inside chasis.
mind to tell us?