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Author Topic: Holesaw for 120mm fan?  (Read 3114 times)

cnc10

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Holesaw for 120mm fan?
« on: May 10, 2007, 03:07:27 AM »

I was wondering what size holesaw I need for a 120mm fan.  I see that a lot of people use the 4.5 inch holesaw, but that is smaller than 120mm.  How do I make a 4.5 inch holesaw work for a 120mm fan?  Do I have to use a dremel or a nibbler to cut the hole to size?
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blafrisch

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Re: Holesaw for 120mm fan?
« Reply #1 on: May 10, 2007, 06:11:01 AM »

A 4.5" holesaw is a ~114mm.  It's only 5% smaller than the fan which in the grand scheme of things does not matter.  Just use a 4.5" holesaw and be done with it.
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pinkpanther

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Re: Holesaw for 120mm fan?
« Reply #2 on: May 11, 2007, 07:45:02 AM »

File, dremel with a abrasive disc, and lots of patience.  Also, a new holesaw might be a little larger than the 4.5" mark; so you'll get around 115-117 mm.  So yeah, use a hole saw and be done with it.   :)
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nOObee

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Re: Holesaw for 120mm fan?
« Reply #3 on: May 14, 2007, 03:56:39 PM »

A hard-to-find 4 5/8' holesaw would be perfect, IF you could drill with zero wobble and runout.   Like they say, use the 4.5.  You'll be glad you did. ;)
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cnc10

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Re: Holesaw for 120mm fan?
« Reply #4 on: May 14, 2007, 07:36:16 PM »

Thanks for the tip nOObee.  I found the 4 5/8" holesaw and was wondering why not to use it.  I almost ordered it then I decided I would ask.  Makes sense now.
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