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Best way to cut holes for fans
sicmic 
13/5/08 11:16:13 AM
Guru

I'm thinking about doing a bit of modding. Specifically, I want to add a couuple of 80mm or 120mm fans where there currently aren't any. What's the best way to cut the holes? Jigsaw? Is there some sort of attachment that you can put on a drill that will cut a perfectly round hole? I've had a bit of a look but am not really sure what's the best way to go.

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Master_Scythe 
13/5/08 11:52:58 AM
Titan

yes, there is a drill bit that will cut a round circle, although you need a drill press and a metal use drill bit to do it well.

Dremel works but prepare to spend about $20 per hole on cutting disks. Jigsaw is good but you need to clamp the area to a piece of wood so it doesnt vibrate and warp the case.

drill operated nibbler is good, but you need a 2000rpm+ drill to use them

Hand operated nibbler is slow, but only $20 and works fairly well.

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Quote by Girvo
I've got a wicked tiny one that is ridiculously sensitive.



Khirareq 
13/5/08 12:00:14 PM
Hero
Immortal


Yeah - Metal hole saw: http://www.dealsdirect.com.au/p/16-piece-bi-metal-hole-saw-engineering-kit/ They arnt cheap though, but worth the investment if your looking at doing a number of holes - Maybe check around your local Kennards Hire and see if they have some for hire?

Master_S has covered your other options (I only posted to name the tool)

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Master_Scythe 
13/5/08 12:02:15 PM
Titan

*throws some gangsta hand symbols*

werd


Edited by Master_Scythe: 13/5/2008 12:02:29 PM

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4200+X2 939, ASUS A8N-SLI-D, Ati HD3850, 1gb,1tb total HDD, 109 DVD, LG DVD-rom.
Quote by Girvo
I've got a wicked tiny one that is ridiculously sensitive.



sicmic 
13/5/08 12:56:12 PM
Guru

Thanks for the info guys.

So, that one that you linked to Khirareq, would I need anything else besides my drill and that kit?

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Khirareq 
13/5/08 1:06:21 PM
Hero
Immortal


Metal hole saws contain two parts (Usually) - The arbor, which is basically a drill bit, but with the extra threaded part on it too allow the attachment of the cutter

Aside from that - No, not really. Things I would recommend would be clamps, eye protection, maybe some cutting lube, and I always wear welding gloves when Im playing with sheet metal - Hate the stuff and the way it can cut skin and flesh

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TrueFlag 
13/5/08 1:31:47 PM
Apprentice
Nibbling tool
http://www.pccasegear.com/index.php?main_page=product_info&products_id=723

Fan hole moulding
http://www.pccasegear.com/index.php?main_page=product_info&cPath=551&products_id=189

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Master_Scythe 
13/5/08 2:25:55 PM
Titan

dude, get a nibber and do it by hand.

you dont wanna drill metal if you're not used to it.

also often the pressure you need to use will bend what your cutting (if its not flat)

nibblers.

will take you 10mins per hole to do, but oh so worth it.

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4200+X2 939, ASUS A8N-SLI-D, Ati HD3850, 1gb,1tb total HDD, 109 DVD, LG DVD-rom.
Quote by Girvo
I've got a wicked tiny one that is ridiculously sensitive.



Khirareq 
13/5/08 2:42:00 PM
Hero
Immortal


Still gotta drill the metal to make a hole so you can get the nibblers in :P


(Sorry - shit-stirring mood for some reason)


If your going to be doing lots of holes, invest in a metal hole saw. If its just one hole, you could do it with a flat head screwdriver and a hammer then file it clean afterwards if you really wanted to. Get a pair of hand nibblers anyways and get used to them - You'll be surprised at how handy those things are

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sicmic 
13/5/08 2:58:21 PM
Guru

Ok, so maybe the nibblers might be the way to go at first. I would think that the metal hole saw probably wouldn't bend the material if you put it on something that sits directly underneath it and that it doesn't matter when it gets destroyed, like hard foam or styrofoam.

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maccdaddy 
13/5/08 9:41:48 PM
Primarch

Foam would never hold it, the torsion would whip it out of your hands and laugh in the foam's face. The hole saw would work if you could fit a piece of wood inside your case and clamp it there.

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www.myspace.com/maccdaddy73

Master_Scythe 
14/5/08 12:05:03 PM
Titan

sicmic, you underestimate the pull of a drill over a large surface area of metal.

aluminium case, no worries.


steel, hope you're wearing a full suit of armour for when it catches and spins out of control.

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4200+X2 939, ASUS A8N-SLI-D, Ati HD3850, 1gb,1tb total HDD, 109 DVD, LG DVD-rom.
Quote by Girvo
I've got a wicked tiny one that is ridiculously sensitive.



maccdaddy 
14/5/08 12:09:43 PM
Primarch

Hahaha that happened to my last Saturday at work, I was holding the thing between my feet and now I'm bruised all in there lol.

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Core2Duo e6850 @ 3.6ghz, Asus P5N32-e SLi, Asus 7900gs@ 616/900Mhz, 2GB Team Xtreem DDR2 PC6400 4-3-3-7, Thermaltake V1, Cooler Master 690, Corsair HX620, Auzentech Prelude!!!

www.myspace.com/maccdaddy73

Khirareq 
14/5/08 1:36:30 PM
Hero
Immortal


Quote by Master_Scythe
sicmic, you underestimate the pull of a drill over a large surface area of metal.

aluminium case, no worries.


steel, hope you're wearing a full suit of armour for when it catches and spins out of control.



Thats why I got a big MDF board, and made a lip along one end

Just place the sheet so the edge is lined up to the lip and two clamps later its good too go. Nice solid weight, and several edges to hold onto so you can safely work - Plus cheap as shit so when its worn out just toss it and make another


Tool-making - Now theres an idea for a thread I could work on

*goes off pondering*

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Smokie 
18/5/08 5:09:29 PM
Serf

What i use is a jig saw with a balde suited for cutting metal. Teeth are around 0.4-0.8 mm appart. I drill the whole, (bigger the drill bit the better) o, make sure you use a nail or something to peirs the steel so the drill bit doesn't slip, than cut out your hole. You have two option now, to file it back you can use a curved file or the other option (what i use for my mods) is a di-grinder. Cleans things up super quick.

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TrueFlag 
18/5/08 8:01:07 PM
Charge
yes, tool manufacturers pay attention.. a huge market worldwide niche market is going untapped

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