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Why don't they make fans out of metal? - Page 2

post #11 of 45
Oh you'll lose that finger...My dad is in the steel industry, it's a thing not to be played with. It's also expensive to work with, the processes involved in punching even basic items from steel is very complex, so I can't even think what cutting fans out of aluminum or steel would cost!
Edited by Jared2608 - 8/19/11 at 12:05pm
post #12 of 45
they aluminium fans, nidec servos and some san aces are aluminium, even the older coolermaster fans are aluminium. and they had great life expectancey. but yes i do agree they weigh more n i wouldn't advise putting them on a cpu cooler. to much stress on the mobo.
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post #13 of 45
Look here. Scroll down to the EBM W2G110-AF45-1. All metal. Every bit.
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post #14 of 45
Quote:
Originally Posted by hammerhead300 View Post
Get a finger caught in one, then ask yourself that question. OUCH!
I don't think the first thing would be "Ouch!", more like..

"Gawwhhhhhhhhhhhh!!!!!" ...... *passes out*
post #15 of 45
Quote:
Originally Posted by Smo View Post
Metal weighs more and would put more stress on the bearings, resulting in a shorter life expectancy.
sanyo denki have metal fans. and they have lifetime raiting longer than most fans we use.
     
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post #16 of 45
Quote:
Originally Posted by Lost4468 View Post
I was just wondering why they don't do this, wouldn't it act as a heatsink and a fan?
Cause technically and economically consumer fans are better if made out of plastic, they are cheaper, they weigh less and there is no danger if the user is careless while handling the fan, well unless it's a Delta
Edited by Pentdragon - 8/20/11 at 11:27am
post #17 of 45
Safety, i always get my fingers caught in the fan, and while i scares you it doesnt hurt, imagine going to move a cable and your pinkie gets caught in ametal fan O_o. Plus plastic is lighter, unless they use aluminum which would give no real performance benefit.
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post #18 of 45
San Ace has fans with metal frames but plastic blades. Catalog here.
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post #19 of 45
Here ya go. It's a rotating heatsink/fan.



http://www.extremetech.com/extreme/8...obref=obinsite
    
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post #20 of 45
Besides all of the (good) answers already given, plastic is far easier to mold into specific shapes. Look at a Scythe Gentle Typhoon, and then think what would be required to get that heavily curved blade pattern done in metal rather than molded plastic.
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