Hi im thinking of putting a case fan in the top of my pc case. Only trouble is theres no hole there to put a fan. What tool shouldi use to cut a hole for a fan and how easy would it be to do. Not quite sure what material it is. Its only a cheap case though and its some kind of metal. Thanks for any helpyou can give

there r soo many to choose from dremal (spelling), a drill , a jigsaw(b careful) just dont try a butterknife

A hole saw would be the best, as it would give you a perfectly round hole. Alternatively, you could use a jigsaw (with a metal cutting blade) or a rotary tool like a Dremel MultiPro.

you might find you can buy a jigsaw and 10 spare blades for the price of a hole saw... maybe that's only if you think about 120mm... can't remember... i'd buy a jigsaw if i had money for more tools...

for cutting steel at the moment i use the hundred drilled holes in a circle technique followed by filing... takes the longest time but is the cheapest...

depends on how much money you got to spend and/or what tools you already got

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A holesaw is the best IMO.

yes a hole saw is best and not cheap if u buy on ebay. i got a hole saw set for under £20. ( $35). and it has very small one to a 120mm sized one. about 12 diferent sized hole saws. and they are for all materials and it came with the arbors to fit them on the drill. i will be using them on my first ''from scratch PC'' just make sure they are bi metal ones or sommit B)

i didn't know that u can make a hole for 120MM fan with a hole saw.
since when there is one the fit for 120MM fan?

Well 120mm = 4 3/4 inches, I have a 4" in my collections of holesaws, I'm sure there must be one 3/4" bigger.

A CD is the right size for a hole for 120mm.

If you don't have the tools to do it....borrow them from a friend. If you can't do that....buy a case with a hole in it already. Some computer shops will put them in for you too. All of those options would be cheaper to do than purchasing a Dremmel Tool or Jigsaw in my area.

no, u cant get 120mm hole saws, but i have got a 127mm hole saw and it worked a treat

just use a hole-saw, they run about $35 depending on what size you get...i could get a 120mm for about $35-40.

If you are not going to do much of this I'd recomend a nibbler metal cutter. Worked ok for what I wanted, a single hole in the top. If you are gonna be doing a lot of modding, making comples cuts, often dremals are the way to go.

Ok i bought a dremel. well the draper equivalent. I had a practice on an old case. Its a tough job and quite time consuming. I found that if i tryed to do it quick the blades just disintergrated. Maybe im doing it wrong. Gonna have a go at real thing tomorrow so any tips would be appreciated. What im actually doing is putting a blow hole in top for now.

When I tried going a little too fast the blade just broke and flew off in all different directions. I kept it slow and everything went fine when I made my 120mm blowhole, I just did it a week ago. Good Luck

dremels should be used on bannisters... like on the advert... heh, na, just get the reinforced bits... i dunno, what is it these days? silicone carbide?

i dunno, the price has put my off the dremel as an expensive toy with fragile bits...

A dremel is handy for a thousand other things besides case modding tho, I'm glad I bought a multipro.

The cutting disk ARE flimsy, it's normal that they wear down, and if you don't stay lined up perfectly, they shatter and fly everywhere. It's typical. It takes time and about a thousand cut off wheels (and a couple of sanding circle things) to get a nice clean hole.

You aren't doing anything wrong, but if you go fast, then they will get smaller and smaller... a good tip is to keep some of the smaller worn down disc for cutting in tight spots, like corners you want to sand down to be round, etc.

I've got pictures of dremel bits shattering in my project log, the link is in the sig.

Bruce

go to hardware store find one of those hole cutting bits for any drill cost is like 3 bucks for one but your only gonna use it so many times

put in drill
tighten
cut

this thing did the trick and it was originally used for wood this thing sheet metal on cases is nothing and you only use the bit for a second
makes a nice clean hole

thanks peeps. Liked the project caxis

are you talkin about a hole-saw (like a cookie cutter)?
cos they're a bit more than $3