Little Heavy.

Discussion in 'Worklogs' started by DeFex, Dec 18, 2009.

  1. Wahoomcdaniel

    Wahoomcdaniel [H]Lite

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    I've never taken apart a heat sink with heat pipes, but are they empty tubes or are they filled with a liquid?
    If empty, could you use copper plumbing tubing?
     
  2. digital_exhaust

    digital_exhaust [H]ard|DCer of the Month - May 2008

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    I believe they are partially filled with liquid. Pretty sure anyhow.
     
  3. DeFex

    DeFex [H]ard|DCer of the Month - June 2011

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    they are "filled" with a partial vacuum, some wicking material and liquid. people have trid making them but you can not solder the end, i think in the factory the machine which crimps the end shut is also inside the partial vacuum.
     
  4. nlancaster

    nlancaster Gawd

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    not so much the partial vacuum, but is that they have the wicking material around the outside. They are, usually, filled with ammonia and the phase change temperature of ammonia is low enough that it can be used as a coolant in heat pipes. Heats up ammonia turns into at the hot spot and is replaced as cooled liquid traveling thru the wicking material.

    http://en.wikipedia.org/wiki/File:Heat_Pipe_Mechanism.png
     
    Last edited: Dec 31, 2009
  5. DeFex

    DeFex [H]ard|DCer of the Month - June 2011

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    More stuff done today!

    Drilling the PCB.
    I stick them to a block of wood with double sided outdoor carpet tape.

    [​IMG]

    then drill. with taig minilathe,

    [​IMG]

    because it is very precise and i dont break as many of these tiny carbide drills. as i do with the drill press!

    [​IMG]

    Then some of the components are soldered in the board, (still waiting for the LEDS, stupid holidays!)
    The next part was drilling and milling the front panel It was done on the bigger lathe, which I have made a milling attachment for.

    [​IMG]
    [​IMG]

    (no photos again while concentrating, sorry :)

    The board is in place. it is bolted right on the panel with no standoffs. because there are milled holes behind it where the components are. i just drilled holes and used self tapping screws because i did not want to risk a tiny tap breaking of in the panel.

    there is still no power button it will be turned from plexiglass and brass.

    [​IMG]

    Later while trying to figure out a "heat pipe squasher" I accidentally made a CPU block :)
    I will put a copper base on it from one of the old heatsinks. and make or adapt a plate or something to hold it down to the motherboard mounting holes.
    It turns out that straightening the zalman pipes is fine even if they end up a bit distorted, where the bend was. That part will be inside the blocks anyways.

    [​IMG]

    The picture is of the motherboard to scale to use as a template for the placement of the screw holes and the heatpipe blocks. etc and make sure nothing will interfere with RAM etc.
     
    Last edited: Dec 31, 2009
  6. Thor

    Thor 2[H]4U

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    i was gonna say, it looks like it might be a bit tight with the ram...

    it looks like if you where to reverse the order you have them in now and spin them 90+° you could have them vertical on the exterior heatsink and it looks like you wont run into any clearance issues nearest i can tell by eyeballing it. other wise i would rebend them and get them as close as i could to the top most pipe.
     
  7. Rossi~

    Rossi~ 2[H]4U

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    Only 3 heatpipes? I would have thought at least 4 for a passive box like this.
     
  8. DeFex

    DeFex [H]ard|DCer of the Month - June 2011

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    well they managed to suck the heat from a 1500w heatgun in to water ok, if it is not enough the block can be remade for 4 or 5 pipes. sa

    this thing http://www.atechfabrication.com/products/mini_client_2500.htm only uses 2 and it doesnt even have proper heatsinks, just sandwiched aluminum plates

    (well you shoulnt expect too much its only $719 fot a similar spec-case only)

    and they have test results with E8400 (im using a lower powered cpu than that)

    http://www.atechfabrication.com/information/DG45FC_Blu-ray_player.htm#Testing
     
    Last edited: Jan 1, 2010
  9. zaz

    zaz [H]Lite

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    fantastic build. I can't wait to see it when it's finished.
     
  10. Atl530i

    Atl530i [H]ardness Supreme

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    I'm impressed.
     
  11. DeFex

    DeFex [H]ard|DCer of the Month - June 2011

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    @Thor
    I put the block on the real motherboard on top of the CPU protector thing, and put in a spacer the same thickness as the copper plate would be. ther is just enough room to click open the ram clip thingys without it hitting anyhting

    but i think it would look better if they were closer to the top one with the same spacing as the block anyways. then that bit of heatpipe wont be sticking out on the other side of the CPU block either. lucky copper is one of the most malleable metals and you can bend and rebend as much as you like :)

    the side attachment is not a sandwich it is one piece of 1/4 inch aluminum with u shaped slots milled in it (need to wait for special mill bit :/ ) . it will press part of the heatpipe flat against the heatsink and the rest will be conducting through that block. also the bottom edge will be milled at an angle for more clearance. It is actual better contact than the CPU block itself, because a flat surface is pressed down rather than (who knows what gos on inside a round hole the same nominal size as the heatpipe, probably not great contact area)

    but even without heatsink compound the heatpipes really take away a lot of heat from the block. if i heat it up with the heatgun and the ends are in water, i can turn the heatgun off, and touch the aluminum right away without it feeling hot. on the same block by itself i cant touch it its too hot (water spits off it)
     
    Last edited: Jan 1, 2010
  12. Elledan

    Elledan [H]ard|DCer of the Month - April 2010

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    I still think this is one of the more awesome projects of the past few years :)

    Great job :D
     
  13. Darkmp40

    Darkmp40 Limp Gawd

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    /Sub'd Making your own circuit board design was pretty kickass!
     
  14. Deluded

    Deluded [H]ard|Gawd

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    Subscribed. Awesome project! I want to see the final build and see how the CPU goes along with a passively cooled case!
     
  15. DeFex

    DeFex [H]ard|DCer of the Month - June 2011

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    another little update. I have not had a lot of time to work on this because of some other projects.

    Today i put on the feet.

    [​IMG]

    After carefully reading the ATX spec i drilled and tapped the holes for the standoffs.
    (those other holes are not mistakes, those are where the feet bolt on)

    [​IMG]

    And the board fit perfectly.

    [​IMG]

    I am still not looking forward to doing the cutout for the atx sheild plate. but it is next on the list.
     
  16. Elledan

    Elledan [H]ard|DCer of the Month - April 2010

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    *watches on* :D

    Can't wait to see the performance numbers :)
     
  17. DeFex

    DeFex [H]ard|DCer of the Month - June 2011

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    In order to once more avoid working on the back panel, today i did the heatpipe to heatsink block.

    I busted my only drill. that is the size i need for these heatpipes :( fortunately that was after i had bored most of the holes and the last one is just a bit less deep, that heatpipe is shorter there anyways.

    the holes were bored with another piece to the side with 1/8th of a diameter outside the block.
    that is so the heatpipes will squish against the heatsink, but still have room inside the hole to deform.

    the plate holding it down against the CPU was a backplate from some heatsink or waterblock. in my PC bits and pieces drawer.

    [​IMG]

    shimano SPD cleat countersink bolts. now the flat plate can sit right on top of the block.

    [​IMG]

    [​IMG]

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    now does anyone know how to remove this kind of heatsink clip? they have just used a double circuitboard header with a u shaped wire instead of 2 pins. then the spring clip hooks under it.

    [​IMG]

    very simple and cheap to make but not so easy for the DIYer!
     
    Last edited: Jan 23, 2010
  18. Rossi~

    Rossi~ 2[H]4U

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    With the heatpipes, did you jsut slap the alu plates over or did you use some TIM as well? also when bolting onto the side of the case i assume you used some TIM there too?
     
  19. Thor

    Thor 2[H]4U

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    push down, bend the wire out of the way, release
     
  20. DeFex

    DeFex [H]ard|DCer of the Month - June 2011

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    oh, just did it, easy as pie :) thanks. im glad it was not some "special tool" kind of deal
     
  21. DeFex

    DeFex [H]ard|DCer of the Month - June 2011

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    The ones on the sides have some but the main block does not yeat, untill the time comes when i am finished disassembling and reassembling to work on other parts.

    there will be TIM between the pipes and the blocks, the blocks 2 halves and the block/CPU

    and the aluminum plates are bored out to a very close fit as well, they had to be really clamped down tight with the bolts and deformed against the heatsink.
     
  22. DeFex

    DeFex [H]ard|DCer of the Month - June 2011

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    custom wire made from one of these and some of these

    Just pry up a little plastic tab to release the 6 way end from the wires and replace them with singles.

    ill probably feed it through a bit of something to make it look better.

    [​IMG]
    [​IMG]

    I did that and put in the wireless card to figure out the routing for the graphics chip heatpipes, but i realised
    I just need to scrounge up a power supply and i can do some tests of the CPU cooling (finished, will use a Pico power supply, but my other htpc is using it at the moment.)
     
  23. Elledan

    Elledan [H]ard|DCer of the Month - April 2010

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    I see you have a printed copy of the ATX specification ready :)
     
  24. DeFex

    DeFex [H]ard|DCer of the Month - June 2011

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    yeah it is not pretty the way things are supposed to line up :) and no measurement from here to there, you have to add and subtract and dont make any mistakes or nothing fits!
     
  25. Elledan

    Elledan [H]ard|DCer of the Month - April 2010

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    I'm just grateful they started adding the metric measurements in later versions :D
     
  26. DeFex

    DeFex [H]ard|DCer of the Month - June 2011

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    I have been running some test with the CPU cooler.
    i ran 10 intel burn test in a row and the CPU could not go over 70c

    however the RAM got quite hot, it is some OCZ gold i scrounged out of another computer.
    is there cool running DDR2? it does not have to be particularly fast. 1066 would be fine.

    Also i havent finished the heatpipe cooler for the ICH/MCH and they get very hot as well with the default intel heatsink. (over 100c!) i had to blow a little fan on them or the burn test would crash the machine (carefully not pointed near the cpu cooler so it would not affect the test)

    anyways the CPU cooler is good, i definately can not get away without the ICH/MCH cooler. and i need cooler running RAM.
     
  27. Rossi~

    Rossi~ 2[H]4U

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  28. ZygoatD

    ZygoatD [H]Lite

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    ram heat pipes FTW!
     
  29. gwarren007

    gwarren007 [H]ardForum Junkie

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  30. Power5

    Power5 Limp Gawd

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    Cut a few vent slots in the back and sides and throw in a very low speed fan. Any air flow will help a ton. I would guess your case HS is way way too thick to be able to transfer the heat from the chips. There is no transfer to the outside air. The HS gets hot around the chip, but its not wicking to the outside, its basically heat insulating the contact point of the heat pipe or chip.

    Just an uneducated guess.
     
  31. scope4live

    scope4live n00bie

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    Neutrondefex.............
    I didn't have room in my 4U's for RAM coolers so I thought higher latency RAM like CL7 on DDR2,etc.
    Turns out that the SPD is what causes the heat.
    Hynix chips with Copper sleeves are the coolest RAM I found.
    Get GSkill or Patriot and go for DDR3 w/ CL9 1066 if any exists, or CL9 1333.
    They do not use SPD on slow " silver brands ". ( titanium being the best, then platinum, gold, etc. ).
     
  32. zer0gravity

    zer0gravity Gawd

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  33. DeFex

    DeFex [H]ard|DCer of the Month - June 2011

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    I had to put it aside for a while while I do some other work. its not abandoned though.
     
  34. gwarren007

    gwarren007 [H]ardForum Junkie

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    Life happens :)
     
  35. nlancaster

    nlancaster Gawd

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    What is this "life" thing you speak of? Do you mean to say there is something other then computer modding in the world?

    DeFex, dont leave it to long.
     
  36. Elledan

    Elledan [H]ard|DCer of the Month - April 2010

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    A life is for people who have nothing better to do ;)
     
  37. krupted

    krupted 2[H]4U

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    NO KIDDING! that has got to be the most unnerving part of any custom case.... i hate it!
     
  38. Wahoomcdaniel

    Wahoomcdaniel [H]Lite

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    DeFex - Still there? :confused:
    I was looking for another build and going page by page, when I ran across Little Heavy.
    I forgot about this build, but I hope it's not abandoned.
    Has six months been long enough to complete your other work?
     
  39. DeFex

    DeFex [H]ard|DCer of the Month - June 2011

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    LOL there is always other work when you are building a modular synthesizer from scratch :)

    As for that machine It is running, but needs a few finishing touches. after this batch of modules i am working on now is done, I will look after it.
     
  40. zer0gravity

    zer0gravity Gawd

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    Needs some more pics!