Where to buy copper shim?

[JJHendrix]

Where's a good place to buy a copper plate to put between a peltier and the cpu slug?

 

[Mikewarrior2]

http://millisec.safeshopper.com/24/cat24.htm?458

Mike

 

[JJHendrix]

that's the site i was looking for....thanks.
how about a place which sells those shims for the PIII's?

 

[Mikewarrior2]

http://www.plycon.com



Mike

 

[mindless]

Just go to Walmart and pick up a piece of felt, its going to cost you all of $0.20 and its enough for ALOT of p3/celly 2's. go home, cut out a square the size of the cpu, then cut out a hole for the cpu die. All done, its what I did and it works great.

 

[JJHendrix]

yes....but last i checked, the heat conducting properties of felt were close to nonexistent. there's no way i am spending 12 bucks on that though....i think i am going to buy one of the shims and cut it myself.

 

[Mikewarrior2]

yeah, they aren't cheap.... but its the only place I know of that sells them...


Mike

 

[JJHendrix]

at 12 bucks it's just about the price where it would be worth just buying and not worrying about...but i'm pretty damn cheap. heh.

 

[helloedchen]

couldn't this be purchased at a local hardware shop? Just get a sheet and cut it yourself...but it might be too much $$$...

 

[thermite88]

JJHendrix wrote:

>>the heat conducting properties of felt were close to nonexistent.

Just don't put the felt in between the CPU slug and heat sink. Mindless suggested that a hole should be cut in the middle, which should allow the CPU to contact the heat sink directly. You can also stack index card paper to the right thickness too. They are non-conducting electrically, thus very safe around the CPU.

If you must use copper shim, you can buy the stock of the right thickness from most hobby shops, where they sell HO train, RC airplane, rocket kit etc. You can cut a U-shape shim with an ordinary scissor. Copper is electrically conductive. Be careful not to short out anything. It actually offers no advantage over felt or paper as shim material.

 

[JJHendrix]

Thermite...I will be cooling with a peltier and am looking for heat conductivity (word?) as well as stability....

 

[mindless]

Ok if you insist on using a copper shim check out http://www.benchtest.com/journey.html and scroll down a bit where he talks about makking his shim and why the 1/1000th of an inch that the white lettered "Intel" and the sticker stick up over the PCB.

 

[thermite88]

>>I will be cooling with a peltier and am looking for heat
>>conductivity (word?) as well as stability....

The copper shim, felt or the little rubber feet on the Alpha will all be the same in stability. In order to assure the best thermal contact between the peltier heat sink and the CPU wafer, you want the shim material to be slightly compressible. In that sense, the felt or rubber feet should work better that the copper shim. The CPU substrat is uneven with white letterings. It is difficult, if not impossible, to make the copper shim to the exact thickness.

 

[Da5hiz32]

.025 x 4" x 10" copper sheet is $9.99 at True Value! Just picked some up to create a shim for a GPU problem in a HP DV4 laptop.

 

[WhoBeDaPlaya]

Holy WTF zombie thread Jesus!