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Thread: Christmas gadget

  1. #1
    Join Date
    May 2004
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    180

    Default Christmas gadget

    I am leaving this very late but would like to build a gadget for my daughter. Like one of those pendulum swinging balls or something. Does anyone have a website or idea's for a metal gadget or something..... I have been searching but having a hard time what to search for. She is 10 and likes little gadgets and science things.

  2. #2
    Join Date
    Aug 2007
    Location
    Leics UK
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    769

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    A Captive nut is simple and quick, Frank Ford has a complete how to write up on his site: http://www.frets.com/HomeShopTech/Pr...aptivenut.html

    Or a machinists cube, or thing inside a cube, such as on Bob Warfields site: http://www.cnccookbook.com/CCTurnersCube.html

    Dave

  3. #3
    Join Date
    Mar 2005
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    Toronto
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    The Turner's Cube is a fascinating object. In the old days, novice machinist's were handed one and told to work out how to make one of their own. It was considered a good test to give a budding machinist to see whether they could first understand how to go about making one and second to see whether they could operate the machinery to the level of precision needed to produce a nice cube.

    while festive , for prosperity's sake that is not a turners cube. Call it a Christmas decoration. A turners cube needs the inside cubes unattached. That the challenge the apprentices had to work out, the Christmas decoration one is straight forward turning or milling. I suppose I'm fighting a loosing battle, with enough disinformation spread like at the link eventually its perceived as the truth

    http://i20.photobucket.com/albums/b2...urnerscube.jpg

  4. #4
    Join Date
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    LA, CA, USA
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    I suppose I'm fighting a loosing battle, with enough disinformation spread like at the link eventually its perceived as the truth
    Yeah, it's almost as frustrating as getting people to learn to use 'lose' and 'loose' properly.
    Regards, Marv

    Home Shop Freeware - Tools for People Who Build Things
    http://www.myvirtualnetwork.com/mklotz

  5. #5
    Join Date
    Jun 2006
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    2 miles from the London Bridge, 43 miles from Swansea
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    Here is an easy one that includes science,

    http://www.homemodelenginemachinist....p?topic=4458.0


    Marv, by the time I found your post you had already posted, did you forget about your own work?
    Last edited by dewat; 12-22-2009 at 05:56 PM.
    Happiness is a sharp tool.

  6. #6
    Join Date
    Jun 2008
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    SF bay area, California, USA
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    1,054

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    See the slide whistle thread. Easy to make out of tubing, don't even really need a lathe.

    A ball bearing'd double pendulum can be a strange sight.

  7. #7
    Join Date
    Mar 2005
    Location
    Toronto
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    ..........
    Last edited by Mcgyver; 12-23-2009 at 06:43 AM.

  8. #8
    gregl Guest

    Default

    The current issue of HSM has a neat anti-gravity gadget that would be lots of fun for kids to try to figure out.

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