It is currently Wed Aug 27, 2014 3:49 am

All times are UTC - 8 hours




Post new topic Reply to topic  [ 13 posts ] 
Author Message
 Post subject: Materials for Drive enclosure
PostPosted: Tue Mar 04, 2003 4:52 pm 
Offline

Joined: Fri Jan 24, 2003 3:45 pm
Posts: 53
Location: Los Angeles, CA USA
I thinking of making a two drive enclosure, sides out of sheet copper or aluminum and wrapped in foam or paxmat, there will be room for an 80mm fan at the end and internal heat sink fins.


How does $19.20 (USD) sound for (12 x 12 x 0.048) inch copper sheet?
and $11.10 (USD) for ( 12 x 12 x 1/8 ) inch Aluminum plate?


http://www.onlinemetals.com/

_________________
-Rich


Top
 Profile  
 
 Post subject:
PostPosted: Thu Mar 06, 2003 11:22 am 
Offline
Friend of SPCR

Joined: Sun Aug 11, 2002 3:26 pm
Posts: 737
Location: swindon- england :/
alu will be easier to work
copper work hardens :\

_________________
hardware Killer and teddy giver. P.I.N.G.U.: Positronic Intelligent Nocturnal Gratification Unit
main rig:q6600, 4 gig ddr2, 3870, x fi, modded akasa psu, 4+hd's
leechbox, p3 something, 80gig hd, soundproofed case


Top
 Profile  
 
 Post subject:
PostPosted: Thu Mar 06, 2003 11:56 am 
Offline

Joined: Fri Oct 04, 2002 9:52 pm
Posts: 2057
Location: United States, Mobile, AL
im thinking of trying something similar to that. I was thinking of using some sinksinks which are actually 3.5 to 5.25" convertor rails(so you can mount a harddrive in a cd bay. And try fitting it in an old cdrom frame. It would be a tight fit, but I think it would go with some force. If not Ill just buy a sheet of alluminum and make an enclosure, and maybe put a 80mm fan hole on the top.


Top
 Profile  
 
 Post subject:
PostPosted: Thu Mar 06, 2003 1:53 pm 
Offline
Patron of SPCR

Joined: Mon Oct 21, 2002 1:01 am
Posts: 543
Location: Vancouver, BC, Canada
I would think about which has the best weight/cost ratio. Heavier = better sound deadening.

If you don't mind waiting, wait until I try out soundproofing lead. I ordered 1/32" thickness which = 2lb/sq.ft. I'm gonna be trying it on my Maxtors in a week or so. It could work well too (they claim a 32dB reduction), and although it's toxic, it's easier to work with. I'll probably line the lead with Al. foil to minimize skin contact. It'll be inside the case anyway, so I'm not too worried.

_________________
FS: SX1040, PSU duct, TigerMP, 2x1.4GHz, 'Cuda7 120GB, dcupld L1As (6V) (link)


Top
 Profile  
 
 Post subject:
PostPosted: Thu Mar 06, 2003 5:10 pm 
Offline

Joined: Fri Jan 24, 2003 3:45 pm
Posts: 53
Location: Los Angeles, CA USA
powergyoza wrote:
I would think about which has the best weight/cost ratio. Heavier = better sound deadening.

I was using the sheet metal to conduct heat to the internal heat spreader fins. Wrap the enclosure in foam sheet, attach a fan at one end and suspend the whole thing.

The copper sheets make the sides of the box,
the HD's make the top and bottom of the box,
The 90mm fan and some foam make the front end of the box,
and the back is open for air flow and cables.

This is looking at the unit from the end.

X Foam or other sound dampenning material
X Copper sheet
X Hard Drive
X Finned Heatsink


XXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXX

_________________
-Rich


Top
 Profile  
 
 Post subject:
PostPosted: Fri Mar 07, 2003 12:29 am 
Offline
Patron of SPCR

Joined: Mon Oct 21, 2002 1:01 am
Posts: 543
Location: Vancouver, BC, Canada
I see what you mean. :) Make sure you pick your foam well. Some perform better than others, and it's usually the heavy stuff that's the best.

From purely a thermal perspective, I'd go with the aluminum. Thicker metal = better heat conduction.

_________________
FS: SX1040, PSU duct, TigerMP, 2x1.4GHz, 'Cuda7 120GB, dcupld L1As (6V) (link)


Top
 Profile  
 
 Post subject:
PostPosted: Fri Mar 07, 2003 7:28 am 
Offline

Joined: Fri Jan 24, 2003 3:45 pm
Posts: 53
Location: Los Angeles, CA USA
I'd like to get some closed-cell silicone foam, but it is expensive.
...It is also very heavy for foam. :wink:

I also found a manufacturer that make thermally conductive elastic. They have both electrically conductive and electrically resistive types.

_________________
-Rich


Top
 Profile  
 
 Post subject:
PostPosted: Fri Mar 07, 2003 10:50 am 
Offline
Friend of SPCR

Joined: Thu Jan 30, 2003 5:58 am
Posts: 152
Location: Fairfax, Virginia, USA
powergyoza wrote:
I would think about which has the best weight/cost ratio. Heavier = better sound deadening.


I don't want to be an instigator, but heavier won't necessarily equal better sound deadening. For the most part that's true, but long-story-short, a "softer" metal will deaden better than a "harder" one because less sound will be reflected. Mass doesn't have much to do with it unless you are COMPLETELY shutting up the box, which 1HandClapping isn't planning on doing. In this case, you want the least reflective surface (which, 1HandClapping, probably isn't going to be metal, but heavy foam. Remember MikeC's rule number 1 on enclosures, "hard drive noise leaks wherever there is a gap in the sound barrier." So if you don't use a sound ABSORBING material and you leave the end open, your going to end up with sound amplification from the sound REFLECTING walls.)

powergyoza wrote:
If you don't mind waiting, wait until I try out soundproofing lead. I ordered 1/32" thickness which = 2lb/sq.ft... and although it's toxic, it's easier to work with. I'll probably line the lead with Al. foil to minimize skin contact. It'll be inside the case anyway, so I'm not too worried.


I might think twice about this approach if I were you. Unless the enclosure is going to be fully out of the way of airflow (which wouldn't make much sense for an HD enclosure), then you'll be fanning lead particles all over the inside of your case and coating your components with an ever-so-miniscule toxic film. You'll also be blowing said particles out the exhaust of your system, ostensibly into the air that you breath while seated in proximity to the computer. I would strongly advise avoiding lead in any such situation (FYI: While no longer in the game, for several years I worked for a contractor in PA who both built and inspected homes. There are very low thresholds for lead exposure in some states, reflecting the very serious problems that can occur due to even limited exposure.) Just a word to the wise.

And to cap off a very much overly long posting (sorry):

1HandClapping wrote:
I also found a manufacturer that make thermally conductive elastic. They have both electrically conductive and electrically resistive types.


Who's the manufacturer and will they sell me some!! I'm going to try a vertical RAID suspension in the HD cage of my case, and I'm very concerned about the temp my drives reach. This would be a great asset to keep the drives cool.

_________________
"Just because I work for the federal government doesn't mean that I'm an expert on cockroaches." -- F"S"M


Top
 Profile  
 
 Post subject:
PostPosted: Fri Mar 07, 2003 11:39 am 
Offline
Patron of SPCR

Joined: Mon Oct 21, 2002 1:01 am
Posts: 543
Location: Vancouver, BC, Canada
jamoore9 wrote:
I might think twice about this approach if I were you. Unless the enclosure is going to be fully out of the way of airflow (which wouldn't make much sense for an HD enclosure), then you'll be fanning lead particles all over the inside of your case and coating your components with an ever-so-miniscule toxic film. You'll also be blowing said particles out the exhaust of your system, ostensibly into the air that you breath while seated in proximity to the computer. I would strongly advise avoiding lead in any such situation (FYI: While no longer in the game, for several years I worked for a contractor in PA who both built and inspected homes. There are very low thresholds for lead exposure in some states, reflecting the very serious problems that can occur due to even limited exposure.) Just a word to the wise.

Thanks for your concern jamoore9. If I were still to build it, I would line the lead with aluminum foil, so that no lead is exposed to moving air. Do you think that will take care of any chances of it going airborne? Regardless, I'll give it some more thought. :?

Quote:
1HandClapping wrote:
I also found a manufacturer that make thermally conductive elastic. They have both electrically conductive and electrically resistive types.


Who's the manufacturer and will they sell me some!! I'm going to try a vertical RAID suspension in the HD cage of my case, and I'm very concerned about the temp my drives reach. This would be a great asset to keep the drives cool.

I second that. That'd be very newsworthy for all of us. Link please! :)

_________________
FS: SX1040, PSU duct, TigerMP, 2x1.4GHz, 'Cuda7 120GB, dcupld L1As (6V) (link)


Top
 Profile  
 
 Post subject:
PostPosted: Fri Mar 07, 2003 12:08 pm 
Offline

Joined: Fri Jan 24, 2003 3:45 pm
Posts: 53
Location: Los Angeles, CA USA
powergyoza wrote:
Quote:
1HandClapping wrote:
I also found a manufacturer that make thermally conductive elastic. They have both electrically conductive and electrically resistive types.


Who's the manufacturer and will they sell me some!! I'm going to try a vertical RAID suspension in the HD cage of my case, and I'm very concerned about the temp my drives reach. This would be a great asset to keep the drives cool.

I second that. That'd be very newsworthy for all of us. Link please! :)


OK, Ok :oops:
www.coolshieldinc.com makes heatsinks and EMI sheilding. Some of it is elastic (i.e. flexible). They were willing to send me a 3"x3" sample.

jamoore9,

Sounds like I may have to baffle the airflow. :idea: Hmm if I use thermally conductive plastic for the spreader fins I may be get some echo canceling behavior.


:?: Is there any reliability or wear issues in mounting the drive with the cable end up?

_________________
-Rich


Top
 Profile  
 
 Post subject:
PostPosted: Sat Mar 08, 2003 6:00 am 
Offline
SPCR Reviewer

Joined: Sat Nov 23, 2002 6:33 am
Posts: 8636
Location: Sunny SoCal
1HandClapping wrote:
Is there any reliability or wear issues in mounting the drive with the cable end up?


No. A lot of the OEMS have been mounting drives like this for years. I've talked to Maxtor and Seagate about HDD orientation and they say you can mount a drive in any orientation as long as it's not mounted at an angle. In other words, flat ("rightside up"), rotated 90° in any direction or upside down, all are OK.

_________________
Main Box: Intel i3-3225, Intel DH77EB, 16GB Corsair RAM, 256GB Samsung 830, SS360GP PSU, CM PS07 case.
Music Server: Intel DH77EB + i3-3220, 2xSamsung 2TB F4, Pico PSU, Fractal Define Mini, 2xScythe Fans @250 rpm.


Top
 Profile  
 
 Post subject:
PostPosted: Sat Mar 08, 2003 1:13 pm 
Offline
Patron of SPCR

Joined: Mon Oct 21, 2002 1:01 am
Posts: 543
Location: Vancouver, BC, Canada
1HandClapping wrote:
OK, Ok :oops:
www.coolshieldinc.com makes heatsinks and EMI sheilding. Some of it is elastic (i.e. flexible). They were willing to send me a 3"x3" sample.

jamoore9,
Sounds like I may have to baffle the airflow. :idea: Hmm if I use thermally conductive plastic for the spreader fins I may be get some echo canceling behavior.

I'm dreaming of using that material for a tight-fitting box to house those hard drives. Now that'd be cool. You could get (some?)sound insulation and thermal conductivity all in 1 pkg. That's the holy grail of silencing! :o

_________________
FS: SX1040, PSU duct, TigerMP, 2x1.4GHz, 'Cuda7 120GB, dcupld L1As (6V) (link)


Top
 Profile  
 
 Post subject:
PostPosted: Sun Mar 09, 2003 9:50 pm 
Offline

Joined: Fri Jan 24, 2003 3:45 pm
Posts: 53
Location: Los Angeles, CA USA
powergyoza wrote:
1HandClapping wrote:
OK, Ok :oops:
www.coolshieldinc.com makes heatsinks and EMI sheilding. Some of it is elastic (i.e. flexible). They were willing to send me a 3"x3" sample.

jamoore9,
Sounds like I may have to baffle the airflow. :idea: Hmm if I use thermally conductive plastic for the spreader fins I may be get some echo canceling behavior.

I'm dreaming of using that material for a tight-fitting box to house those hard drives. Now that'd be cool. You could get (some?)sound insulation and thermal conductivity all in 1 pkg. That's the holy grail of silencing! :o


For a tight enclosure like the SmartDrive, you could replace the foam with a silicone gel sheet like SARCON XR-j which has a thermal conductivity of 14W/m-K. I don't know how "squishy" this particular formulation is but many silicone gels are great vibration dampers. Copper filled silicone gel has high thermal conductivty but not electric, while carbon filled and silver filled can conduct electricity.

_________________
-Rich


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 13 posts ] 

All times are UTC - 8 hours


Who is online

Users browsing this forum: No registered users and 3 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group