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Question about cutting blowholes

N

Naldo

2[H]4U
Joined
Jul 7, 2001
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Thinking about putting 2 80mm fans in my ideq, but my drill is not variable speed, Will this cause a problem when using a holesaw?
 
nope. Just use a little finesse in the amount of down-force you apply to the drill/saw.
 
Anyone know if or where you can get a holesaw for a 120mm fan?? Just purchased one and was going to us a dremel but if you can just punch and cut/drill much easier. Thanks
 
http://www.mcmaster.com/

Hole saws aren't cheap (the good ones anyway). But if you get a good one, it'll last you a lifetime as long as you don't try to cut through concrete or something ;)
 
dylan said:
What size hole saw do you need for a 120mm fan
Click to expand...

Take one of those "coasters" that your CD burner made (or one of those annoying AOL CD's that Steve Case keeps mailing out) to the store and match it up to a hole saw. A CD is a great template for 120mm holes. I use the CD to draw the line where to cut with a jig saw. You can buy a decent jig saw for about the same price as a 120mm hole saw, and that does not even include the cost of the drill needed to push the hole saw. A jig saw can be used for thousands of other projects too, where a hole saw is good for cutting one size hole.
 
3" for 80mm fna and 4 1/2" for 120"mm.

Lowes has the 4 1/2" with an arbor for $35. Not a bad deal for both.
 
The 4-1/2" works fairly nicely but is rather expensive (about $52 CDN at Rona) but a variable width drill bit with bevel will run you under $20 (CDN) and can be used to drill blowholes of various sizes in one neat package. A little tough if you are "free" handing it but still manageable - even more so if you have a small drill press that you can mount your drill in.

The "ideal" diameter is 117 mm for a 120 mm fan and 77 mm for an 80 mm fan.

Additionally, there is a circular hole cutting tool that can be attached to a dremel which, again, will permit variable hole cutting sizes.

Good luck!
 
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