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Thread: Adjustable Box Joint Jig

  1. #1
    Join Date
    Nov 2007
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    Adjustable Box Joint Jig

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ID:	20232To get started with an adjustable Box joint Jig, I bought a pals to adjust the saw blade parallel to the rails within +-.003 The plan was from American Woodworker #133 January 2008
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ID:	20233
    The runners were made from Hard Maple. They were shimmed to the out side of the slots, with very little clearance.The base and fixed fence are glued at 90° Put a weight on the base and let it dry.Then you can go ahead install screws later.
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ID:	20234The small section is fasten to the fixed fenced fence.The adusting is with a 1/4-20 x 6" eyescrew bushed both ends. It really adjusts,very nicely.
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ID:	20237The adusting fench has two 1/4 x 20 thumbscrews
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ID:	20235I added 4" to the back for extra weighThere are several things that were different from the original that I went ahead change the plan. It has been a very hard working Fixture.Very nice to use.
    SOMEDAY is not a day of the week

  2. #2
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    Made something similar but it uses a 1/4-32 thread for the adjustment. Then one turn of the adjustment moves it 1/32 of an inch. Makes quick set up of box joints.
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  3. #3
    Join Date
    May 2007
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    Kansas City, Missouri
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    Gayl,

    Thank you very much for taking the time to take pictures and post this. I'll have to see about getting a copy of those plans. I've got a jig now, but it's not adjustable and was made for an old dado set. Was looking at making a new one, so this looks to be the way I'll go.

    Thanks again,
    Darren

    To a small child, the perfect granddad is unafraid of big dogs and fierce storms but absolutely terrified of the word “boo.” – Robert Brault

  4. #4
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    That is great Gayl, thanks for the details!
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  5. #5
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    Nov 2007
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    Muskegon,Mi.
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    108
    Quote Originally Posted by Jeff Horton View Post
    Made something similar but it uses a 1/4-32 thread for the adjustment. Then one turn of the adjustment moves it 1/32 of an inch. Makes quick set up of box joints.
    Good point!!With 1/4-20 thread it moves .05 in one full turn.I was not thinking about that,the next one I build it will have 32 pitch thread.
    SOMEDAY is not a day of the week

  6. #6
    Join Date
    Apr 2008
    Location
    London, Ohio
    Posts
    17

    Box Joint Jig

    Good Evening Friends,
    Gail, I particularly like your jig as mine is one I made several years ago but, like a fool I loaned it out and haven't seen it since.

    I just might build one like yours but, will use the 1/4 x 32 bolt as I can see how it would hasten the setting and be very accurate.

    Respectfully,
    Last edited by Ralph Jones; 05-10-2008 at 11:39 PM.
    Ralph Jones

  7. #7
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    Nov 2006
    Location
    Alpharetta GA ( Metro Atlanta)
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