How to centre a fan over a hole?

Akira · 2 May 2008 at 17:35

I have some 80mm holes in the back of my desk and I want to put some unused fans over them to exhaust the hot air from the back of my case. Is there a way to make the mounting markings perfectly square with the hole or is it just a case of doing it by eye?

Cosmic182 · 2 May 2008 at 17:37

eye is the best way

helmutcheese · 2 May 2008 at 17:38

The holes will not be 80mm for a 80mm fan anyhow.

You can Google for a Template for any Fans you use inc 80mm, this will give you the Screw Holes also.

Cosmic182 · 2 May 2008 at 17:39

just eye them up, no one goes round with a tape, as long as its asthetically pleasing to the eye then its right

Akira · 2 May 2008 at 17:42

helmutcheese said:
The holes will not be 80mm for a 80mm fan anyhow.

You can Google for a Template for any Fans you use inc 80mm, this will give you the Screw Holes also.

I didn't say they would be 80mm? On an 80mm fan the mounting hole gap is 100mm. My holes and fans are both 80mm so a perfect fit, if I can but centre them properly. I'll google for fan templates then, ta.

Akira · 2 May 2008 at 17:43

Cosmic182 said:
just eye them up, no one goes round with a tape, as long as its asthetically pleasing to the eye then its right

Tempting, and probably what I'll resort to through laziness

They'll be out of sight anyway.

helmutcheese · 2 May 2008 at 17:54

I answered with the info you gave me, which was 80mm holes in your case.

You probably means screw holes with a pitch of 80mm.

Yellowbeard · 2 May 2008 at 18:01

If you use a light adhesive such as a silicone glue you can glue the fans to the inside of the desk. With them on the inside of the desk, it won't matter if the fan housing is square or not as you won't be able to see them. And the silicone is easily removed if needed. Unless I am misunderstanding your initial post.....which is entirely possible.

Also:

“Make sure that the beer - four pints a week - goes to the troops under fire before any of the parties in the rear get a drop.”
-Winston Churchill to his Secretary of War, 1944

Churchill was a wise man!

Akira · 2 May 2008 at 18:34

They're on now anyway, thanks for the replies. I didn't think of glue. DOH!