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holesaw + plexi window = good flow

M

malicious

Supreme [H]ardness
Joined
Apr 8, 2005
Messages
4,772
I have a 4inch holesaw and a 5inch holesaw .. no 4.5(120mm) -- the whole kit that included 6holesaws was less at harbor freight than one 4.5 incher at lowes ... soo..

so my options are

4inch + 120mm - hole slightly too small .. big diff?
4inch + 92mm - don't know if that's the right hole size for 92
5inch + 120 - hole slightly too big .. ugly .. really not an option
5inch + 140mm streamliner - 140 is expensive and I don't know if 5incher is right..


see my problem..



side question: list the places you know of that sleeve fans for you

i know of: frozen and performance .. any others?..
 
I use a 113mm hole saw for each of my 120mm holes... I dont know what that is in inches... google... 4.4 inches. And it works pretty well... I dont know if this helps you at all.
 
thanks for chimeing in and i'm glad you're in holesaw heven but no i doesn't help much ..

really what i want to know is .. is it ok to use the 4incher or will it:

A. be loud
B. look like shit
C. be ineffeicent
D. all the above..


anybody use a 4 inch holesaw for 120mm?

also keep those links coming for great places to find pre-sleeved fans...

thanks,

mal
 
I'd say "D" .......... 4" will be too small, and 5" will be too big.

To convert decimals to metric ..... diameter ÷ 25.4 ..... in your case ~ 120mm ÷ 25.4 = 4.724"

Since the fan blades are always smaller than the frame, most use a 4 5/8" holesaw for
a 120mm fan. A CD disk makes a great template for 120mm fan.

BTW .... is that holesaw set from HarborFreight "bi-metal", or at least "high speed steel"?
If neither they likely won't be much good for cutting metal. I know you plan to cut plastic.
Just wanted to mention that for future reference.
 
they are for wood and i've used some of them 5+ times to go through light aluminum .. no problems .. that bi-metal bs is for steel cases i guess .. wood ones seem to work just fine for me. ..

any links to places to find pre-sleeved fans?
 
I know the 4.5 is what i need i just don't have it and don't want to spend 30bucks on one..

mal
 
malicious said:
they are for wood and i've used some of them 5+ times to go through light aluminum .. no problems .. that bi-metal bs is for steel cases i guess .. wood ones seem to work just fine for me. ..
>>>>>
Click to expand...
Yeah, and your holesaws made for wood won't last near as long cutting metal as that expensive Bi-Metal 4.5" saw
that you saw at Lowes. But hey, who needs to spend money on a tool which will last many years when
used properly when you intend to throw it away after a few cuts?

About the sleeved fans .... can't offer any advice there since I do my own, sorry.
 
yea i plan on haveing this case for ever .. so it only needs to be holed so much

i haven't noticed any ware on the bits .. steel vs. aluminum - who ya got?

polishing compound for light scratch on acylic .. works?
 
Do you have a Dremel or similar tool? If so trace around a CD disk to get the size. Cut an octagon with the
reinforced cutting disks in Dremel, and round out the edges to a circle with grinding bit and/or hand files.
Easy as pie. :D
 
well i made a cut with hole saw on a spare piece of acrylic .. took a while to get through it actually .. i'll have pics later .. was off on my fan mount holes so it's off center a bit.. good thing it wasn't the good piece of acrylic

later
 
given the choice between the 4" and the 5", I would choose the 4", then set the fan back about an inch from the hole and add a duct from the fan to the hole. It shouldn't cause any loss in flow, since not all the area of the fan actually pulls air (the hub and frame reduce the effective area). Plus, some of the noise might get blocked before it gets out of the case.

 
el rolio said:
pics!
Click to expand...


will do .. my loop sprung a leak so i fixed it and it's testing .. so as soon as i can get it back together i'll post pics..

mal
 
here you go .. as advertised .

ok before you guys lay into me read below:

1. this is a spare window
2. this was my first attempt
3. I know it's crooked
4. the fan and wireing is for testing
5. I'm getting a metal mesh filter / grill to cover the hole anyway ..
there .. that should hold the flamers a bay for at least five minutes..


blockholemobo0019to.jpg


blockholemobo0022xd.jpg


blockholemobo0034hf.jpg


blockholemobo0047gd.jpg


I have this grill/filter on the way = fan hole size = no bigge
141b4ow.jpg
 
Looks like it turned out well. It looks like it is a bit small, but I doubt it will affect airflow much.

With that filter, you probably want to put a piece of cloth behind it to block fine dust. I have 3 of those filters on my 80mms, and they don't block anything small.
 
it's just for looks .. i routinely blow out my pc with a small air compressor.. dust is not a problem ..

mal
 
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