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quick question re: fan in aluminum

post #1 of 3
Thread Starter 
Real quick questions here...

I have already, using a bimetal hole saw, made a 120mm hole in my door. I did an o.k. job, I had the drill on too high and applied too much pressure... I also probably should have used some lubricant...

anyways all that is beside the point.

case is 1.5mm aluminum

What I want to know is when I am drilling the holes for the standard size fan screws themselves, what size bit should I use?

and

if I am adding this case fan filter to cover the hole will I need to get a longer fan screw to secure it all?
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The mothership
(23 items)
 
  
CPUMotherboardGraphicsGraphics
Phenom X6 1090T Crosshair V Gigabyte GV-N670OC-2GD Gigabyte GV-N670OC-2GD 
RAMHard DriveHard DriveHard Drive
8gb of some junk  KINGSTON SH103S3120G KINGSTON SH103S3120G ST3000DM 
Optical DriveCoolingCoolingCooling
MATSHITA BD UJ240AS H100 2x GT-AP15 2x Corsair SP140 
CoolingOSMonitorKeyboard
2x Fractal Design R2 Silent Series Win7 Asus VG278HE Logitech G710+ 
PowerCaseMouseMouse Pad
Fatal1ty 1000w Fractal Design R4 Logitech G500 Steelseries 
AudioAudioOther
Logitech Z-5500 w/ bookshelfs Mackie Studio USB Cables 
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post #2 of 3
Test the length of your fan screws before drilling your holes. Set your filter on the inside of the panel, with the edge on the edge of your fan opening. Set your screw into the opening, pointing into the case with the flat top of the head flush to the outside of the case. If you see at least 2 threads behind the filter, it'll do. If not, go find some longer screws.

For the holes in the case:
1. Select your drill bit size by eyeballing the thickness of the drill shank (part without the twist) against the threaded part of the screw. Find a bit that is slightly thicker than your screw threads. The holes do not have to be super accurate diameter and a little extra slop will make assembly easier.

2. Mark your hole locations with a pencil, then use a center punch to make a divot for the drill bit to follow. This will keep the bit from walking out of position on you.

3. Once the holes are drilled, use a countersink bit to flare out the tops of the holes. This will make the screw heads sit perfectly flush with the surface. Stick the screws into the countersunk holes occasionally to test where they will end up and drill your countersinks down a little at a time.
post #3 of 3
Check out this mnpctech guide.
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