The Ultimate Geek Keychain

Discussion in 'HardForum Tech News' started by FrgMstr, Jan 17, 2017.

  1. FrgMstr

    FrgMstr Just Plain Mean Staff Member

    Messages:
    47,995
    Joined:
    May 18, 1997
    We have made more than our fair share of CPU die "keychains" over the years. This is the coolest one I have seen in a long time though and comes to us via 3D Center. The video shows you how to reflow (de-flow) a CPU or GPU package and then sand it down to reveal all the goodness inside by hand. Certainly a good lapping tool could cut your time down below 4 hours! And of course, what a better use of an old Xbox CPU/GPU is there?
     
  2. Dan_D

    Dan_D [H]ardOCP Motherboard Editor

    Messages:
    53,226
    Joined:
    Feb 9, 2002
    I may have to do this. I've got a crap ton of old CPU's and GPU's lying around.
     
    FrgMstr and tunatime like this.
  3. Lifelite

    Lifelite 2[H]4U

    Messages:
    2,949
    Joined:
    Aug 26, 2015
    That looks like a ton of work for a fancy key chain that's just going to stab your leg while in your pocket.
     
    IcePickFreak and Bandalo like this.
  4. PhotoBobBarker

    PhotoBobBarker [H]Lite

    Messages:
    122
    Joined:
    Oct 20, 2011
    I wonder if you could attach the epoxy side to something like one of the vibration tools and start at something like u5-10 grit?
     
    FrgMstr likes this.
  5. tunatime

    tunatime 2[H]4U

    Messages:
    2,846
    Joined:
    Sep 15, 2011
    Chicks will love it and be all over your with that on
     
    cyclone3d and daglesj like this.
  6. ir0nw0lf

    ir0nw0lf [H]ardness Supreme

    Messages:
    6,258
    Joined:
    Feb 7, 2003
    True that, chicks dig guys with big chips. :p
     
    drescherjm and tunatime like this.
  7. Uncle

    Uncle 2[H]4U

    Messages:
    2,194
    Joined:
    Jun 7, 2004
    Hey Babe, look what I made for you, took me hrs of true grit. OHHH honey Ohhhh you do love me. Ahh what is it? Well you have to hold it under a light at an angle......... Haven't we had this discussion before.
     
    TwistedAegis, deaedius and tunatime like this.
  8. Seventyfive

    Seventyfive [H]ard|Gawd

    Messages:
    1,346
    Joined:
    Jul 14, 2004
    For some reason I thought your reply was first directed toward the post directly above you talking about "vibration tools"....
     
  9. TorxT3D

    TorxT3D Gawd

    Messages:
    651
    Joined:
    Apr 30, 2006
    way to much work.
     
  10. dsystem

    dsystem Limp Gawd

    Messages:
    137
    Joined:
    Nov 6, 2009
    It's cool but the process seems inefficient with all the 'local lapping'... Couldn't he start with some device to apply even pressure across the whole chip?
     
  11. Simplyfun

    Simplyfun Gawd

    Messages:
    1,012
    Joined:
    Dec 17, 2016
    I've done this before, I just glued the epoxy coated top to a palm sander pad and in turn let the sander "float" on a couple of slats I had cut and sanded to the right height. I just ignored it while it ran, the sander was heavy enough as it is and when the sanding pad touched the wooden slats I was done for the most part. Polishing the epoxy is quick once you remove it from the sander pad as is the final step -polishing of the exposed die. Once you have the slats at the right height keep them and reuse for same chip in the future.
     
  12. IcePickFreak

    IcePickFreak [H]ard|Gawd

    Messages:
    1,082
    Joined:
    Dec 1, 2010
    It's cool, but $5 on the display at the cash register cool. Not 4+ hours of lapping it myself cool.
     
  13. DocSavage

    DocSavage 2[H]4U

    Messages:
    2,409
    Joined:
    Dec 18, 2002
    Yeah, you can see where he has some gouges in the chip as well. You could probably just carefully foam tape a cpu cooler's base to the top of the chip for even pressure. Well, I'm not sure if foam tape would withstand that much horizontal force for four hours of constant work in water though.
     
  14. Ur_Mom

    Ur_Mom I'm Not Serious

    Messages:
    19,604
    Joined:
    May 15, 2006
    I had an old Pentium that I removed the 'lid' from and it had the visible tie. Of course, it also has a huge nic in it from the Dremel... I don't have the steadiest of hands. :D
     
  15. DocSavage

    DocSavage 2[H]4U

    Messages:
    2,409
    Joined:
    Dec 18, 2002
    Well, it's not like it'd be in perfect shape smashed against keys for the rest of its life anyway I suppose.
     
  16. DocSavage

    DocSavage 2[H]4U

    Messages:
    2,409
    Joined:
    Dec 18, 2002
    I have an '06 Pentium dual core that might be fun to try this on.

    That xbox chip didn't have a damn heatspreader. anyone know how to get them off? Can I just use the oven/burner to melt the glue?
     
    Last edited: Jan 18, 2017
  17. Ur_Mom

    Ur_Mom I'm Not Serious

    Messages:
    19,604
    Joined:
    May 15, 2006
    I used to have an Intel keychain from Intel that was a 486 die encased in acrylic. I got it years ago. The plastic was all scuffed and the plastic part broke where the keychain went, but I probably still have that somewhere.

    I'd love to see someone get a bunch of dies (or wafer and get it cut) and do something similar. It's some nerdy shit. Awesome and interesting nerdy shit! :)
     
  18. TwistedAegis

    TwistedAegis [H]ardForum Junkie

    Messages:
    8,958
    Joined:
    Oct 7, 2009
    Make an entire rubiks cube out of those, that would be awesome.
     
  19. DocSavage

    DocSavage 2[H]4U

    Messages:
    2,409
    Joined:
    Dec 18, 2002
    Lets see. 4 hours of polishing for 1 piece * 9 pieces per side * 6 sides = 216 hours of fun and then all the sides would look the same :D
     
    TwistedAegis likes this.
  20. Uncle

    Uncle 2[H]4U

    Messages:
    2,194
    Joined:
    Jun 7, 2004
    Only if you used the same processor. A man of your intellect would have no problem differentiating the chips.;)
     
    TwistedAegis and DocSavage like this.