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    soldering copper shims?

    Discussion in 'Hardware Components and Aftermarket Upgrades' started by cdoublejj, Dec 23, 2012.

  1. cdoublejj

    cdoublejj Notebook Deity

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    I've been spending time working on my 5920g. After initially upgrading to my current specs temps were great after time running extend tests they are average, still a bit warm/hot, so i began brain storming.

    One idea i had was soldering my copper shim straight to the heat sink instead of using AS5 on both sides, unfortunately even at 420+ C I couldn't heat the shim the way i wanted (with out tinning the gpu side) and I didn't have the torch to heat it with a flame.

    I was wondering if any one else was as insane as me and has tried soldering those copper shims to the stock heat sink and if so how?

    another thing i tried was using thermal pads in conjunction with with heat pipe i de soldered from laptop cooler. the heat pipe was blazing hot even after turning the laptop off to remove it, though it didn't really help temps as don't really have any place to vent/release the heat from it other than the plastic cover that goes over it.
     
    cdoublejj, Dec 23, 2012
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  2. Mobius 1

    Mobius 1 Notebook Nobel Laureate

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    The melting point of copper is 1.085 celcius...
     
    Mobius 1, Dec 23, 2012
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  3. cdoublejj

    cdoublejj Notebook Deity

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    the melting point of solder is just above 200c or there about.
     
    cdoublejj, Dec 23, 2012
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  4. niffcreature

    niffcreature ex computer dyke

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    Its still very hard to tin an entire piece of copper. I've done it before. You should use flux, a wire brush before hand and preferably some special type of solder.

    I was able to accomplish heatsink soldering with a blowtorch that you can get at hardware stores.

    Its still very difficult. You have to heat both of the entire pieces of copper to do it properly. The stuff that originally holds the heatsink together will start to fall apart. The heatpipes will expand and mess up the radiator.

    There is probably a better way to do it but I just don't know it yet.
     
    niffcreature, Dec 24, 2012
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  5. cdoublejj

    cdoublejj Notebook Deity

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    if there is a way to spin up the fan (still mounted) that could counter act some of the expanding but, you would have to hope that doesn't hurt the ability to melt the solder.

    There is indigo extreme it melts at 90c but, that would be cutting it close for a gpu. there is also the gallium (i think) based stuff they use to solder the lids to cpus (probably similar to the indigo extreme).
     
    cdoublejj, Dec 24, 2012
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