RS: [Beowulf] Cases for DIY boxen

malcolm croucher malcolm.croucher at gmail.com
Sat Oct 25 02:56:30 EDT 2008


I was watching click online (www.bbcworldnews.com/click ) and they mention
in the programme how you can build your own boxes into figures like spice
racks , robots , cars ect . From the programme It seems you buy pieces of a
box which act like lego and then build your own box . quite nifty.



Regards

Malcolm

On Fri, Oct 24, 2008 at 11:25 AM, Alan Ward <award at uda.ad> wrote:

>
> Nowadays many exposition halls, restaurants etc. in Europe have stratified
> wood beams. These need to be treated with fire retardants by regulation, in
> which case they are actually more safe than steel (steel bends and bucles
> when warmed).
>
> You could take a look at whatever products they use to treat them.
>
> PS: My last DIY box was a TV table on wheels, with a couple of shelves for
> video casettes underneath beahind glass doors. I took out the shelves and
> put in 4 motherboards, and there I was with a 70x70x50 cm mobile cluster.
>
> Cheers,
> -Alan
>
>
> -----Missatge original-----
> De: beowulf-bounces at beowulf.org en nom de Dan.Kidger at quadrics.com
> Enviat el: dv. 24/10/2008 10:31
> Per a: peter.st.john at gmail.com; rgb at phy.duke.edu
> A/c: Beowulf at beowulf.org
> Tema: RE: [Beowulf] Cases for DIY boxen
>
>
> I am not so sure that wood is as flammable as you think.
> Hard wood needs sustained heat for a reasonably long period of time to get
> going.
>
> And anyway for a computer system there is no reason why you can't do some
> fireproofing - get some borates, silicates or other salts to keep the
> organic matter away from the oxygen. Waterglass (Sodium silicate) is cheap
> and readily available.
>
> Although I guess the main negative factor for us  is the presence of a high
> airflow bringing lots of fresh oxygen. So if you could use oxygen-free
> cooling air (!) or otherwise shut the airfow off triggered by a smoke
> detector ...
>
> Daniel
>
>
>
> From: beowulf-bounces at beowulf.org [mailto:beowulf-bounces at beowulf.org<beowulf-bounces at beowulf.org>]
> On Behalf Of Peter St. John
> Sent: 23 October 2008 18:33
> To: Robert G. Brown
> Cc: beowulf at beowulf.org
> Subject: Re: [Beowulf] Cases for DIY boxen
>
> Robert,
>
> Yes, the consensus (offline) had seemed to be that humidy, thermal
> insulation, etc are not issues; and the only issue would be flammability.
> And yeah, I actually watched a capacitor explode under ideal circumstances
> (it was shadowed dark behind the box where I was looking, wondering why the
> prototype game box was behaving badly); it shot a beautiful little jet of
> flame.
>
> Incidentally, Sebastian Hyde has pictures of a really beautiful black
> walnut PC. I think the right word is "baroque". Really beautiful. But yeah
> consideration would have to made for the fire issue.
>
> Peter
> On 10/23/08, Robert G. Brown <rgb at phy.duke.edu<mailto:rgb at phy.duke.edu<rgb at phy.duke.edu>>>
> wrote:
> On Thu, 23 Oct 2008, Peter St. John wrote:
> On the subject of Doug's "A Case for Cases"
> http://www.linux-mag.com/id/7164, I had noticed that the Helmer thing
> ("bewwulf in an Ikea cabinet") is not
> really in a wood cabinet (the steel box can be put inside a cabinet). I'm
> assuming it's unreasonable to actually make a wood cabinet? On account of
> humidy, or just weight? To me it just sounds easy to build a wooden rack
> for
> a bunch of ATX motherboards. And it could look nice. Thermal and electrical
> insulation would be OK, and humidy controlled with a good paint job on the
> interior...?
>
> What about fire?  Anything electrical can in a worst case pop hot/molten
> metal before frying and/or blowing a breaker.  Capacitors blow up
> (literally).  A wire is badly soldered and pulls free and grounds out,
> spattering white hot metal.
>
> Inside a metal shell, odds are you won't get a REAL fire as there isn't
> much actively flammable around.  In a wooden box, carefully dried by six
> months of 50C heat... it wouldn't take a lot to get real flames,
> especially if the box had e.g. a cooling fan mounted to actively fan a
> hot coal into flames.
>
>   rgb
>
> Peter
>
> --
> Robert G. Brown                            Phone(cell): 1-919-280-8443
> Duke University Physics Dept, Box 90305
> Durham, N.C. 27708-0305
> Web: http://www.phy.duke.edu/~rgb <http://www.phy.duke.edu/%7Ergb><
> http://www.phy.duke.edu/%7Ergb>
> Book of Lilith Website: http://www.phy.duke.edu/~rgb/Lilith/Lilith.php<http://www.phy.duke.edu/%7Ergb/Lilith/Lilith.php>
> <http://www.phy.duke.edu/%7Ergb/Lilith/Lilith.php>
> Lulu Bookstore: http://stores.lulu.com/store.php?fAcctID=877977
>
>
>
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-- 
Malcolm A.B Croucher
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