Stratasys.com is offering a 3D-printed iPhone Case with Moving Gears (iPhone 4/4S or iPhone 5) for $0 with free shipping. Fill out a brief form to get the free phone case, or download the STL file to see if your 3D printer can print the case.

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    mkozicki Ben's cred: 10
    Posted 5:36 am PDT 09/15/13

    Well I put one in for my work address let's see if it ever shows up.

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    bclinton Ben's cred: 187
    Posted 8:29 am PDT 09/15/13

    I dont understand 3D printing. Can one of you goobs explain it to me.

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    jaceone Ben's cred: 9
    Posted 9:16 am PDT 09/15/13

    bclinton wrote:
    I dont understand 3D printing. Can one of you goobs explain it to me.


    Just imagine a machine squeezing out plastic from above onto a platform below.
    Moving left right front and back and then also building up layers.

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    Shmeagle Ben's cred: 710
    Posted 9:37 am PDT 09/15/13

    Or building something out of a cube of plastic of various sizes.

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    bclinton Ben's cred: 187
    Posted 11:40 am PDT 09/15/13

    Ah, similar to a CNC machine? Now those are cool!

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    atari800 Ben's cred: 83
    Posted 1:03 pm PDT 09/15/13

    CNC machine...didnt they sing "Everybody Dance Now" song?

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    btc909 Ben's cred: 437
    Posted 4:05 pm PDT 09/15/13

    3D Printing, Skynet, it's all the same thing.

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    kendunn Ben's cred: 93
    Posted 5:47 pm PDT 09/15/13

    bclinton wrote:
    Ah, similar to a CNC machine? Now those are cool!


    I think its kind of a CNC machine in reverse, instead of removing material it adds very thin layers of plastic to build something.

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    kosherkracker Ben's cred: 65
    Posted 9:42 pm PDT 09/15/13

    That sounds like my wife in a shopping mall.

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    me2 Ben's cred: 105
    Posted 6:13 am PDT 09/16/13

    Brown 25.

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    xirtam31337 Ben's cred: 41
    Posted 8:10 am PDT 09/16/13

    I just signed up with a spam email account and a fake address. Hope it shows up. Wink

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    Myself Ben's cred: 205
    Posted 11:51 am PDT 09/16/13

    It's basically a hot-glue gun, squirting out a thread of molten plastic which cools and solidifies.

    Move the nozzle relative to the platform, start and stop the extruder as appropriate, and you can deposit plastic where you want it and not where you don't.

    Then move the nozzle and the platform farther apart, and print another layer on top of that. Repeat to build up 3d objects.

    Printing "ledges" and things without things under them is tricky, so often a printer will have two nozzles extruding different types of plastic, one is the "support material" and usually soluble in something, and one is the "model material" and not soluble in that solvent. Once the print job is done, you set the part in the solvent tank and get rid of the support material.

    That's the basics of how the extruder-based printers work. Fused-deposition, photopolymer resin, and powder-binder systems are their own stories and you can look them up on your own. Smile

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    nextel2010 Ben's cred: 113
    Posted 1:01 pm PDT 09/16/13

    In for one...let's see if it comes...

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    JediKnight Ben's cred: 647
    Posted 1:23 pm PDT 09/16/13

    I 3D Printed a Gun: http://www.youtube.com/watch?v=Spm_zrjedzk

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    Tycon Ben's cred: 14
    Posted 1:32 pm PDT 09/16/13

    Signed up with two different email accounts and I have not been sent any confirmation emails. Has anyone gotten an email from them?
    My fear is it is a bunk offer!

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    lschang Ben's cred: 24
    Posted 5:59 pm PDT 09/16/13

    looks like a cow to me.

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    manoj382 Ben's cred: 4
    Posted 6:38 pm PDT 09/16/13

    @tycon, I signed up when it was first posted to BB. I didn't receive a confirmation email, either.

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