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Thread: Adjustable Finger Joint Jig

  1. #1
    Join Date
    May 2010
    Location
    Orland Park, Illinois, USA
    Posts
    264

    Adjustable Finger Joint Jig

    I have wanted to try my hand at one of these for a while. Had some time between projects so gave it a go.

    Click image for larger version. 

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    Made from MDF, hardboard, t-track, a few pocket screws, two thumb knobs. The first set of fingers are all 1/2". So, I gave it a try.

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    Fingers went together with some light mallet taps. A little chip out on one edge, my fault. Forgot to score the edge and pushed the router to hard. Overall, quite pleased for the first try. So, I switched up the fingers ..

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    Again, went together with some light mallet taps. Good clean cuts. Now, I will make some 5/8", 3/4", 7/8" and 1" fingers. This will give me lots of versatility for the upcoming bedroom set project ... looking to use some Greene and Green style.

    Thanks for looking.

  2. #2
    Join Date
    Nov 2006
    Location
    Constantine, MI
    Posts
    7,699

    Adjustable Finger Joint Jig

    Nicely done! I built one of these a few years ago but not nearly as nice or big as this one.
    Host of the 2017 Family Woodworking Gathering - Sunken Wood

    “We all die. The goal isn't to live forever; the goal is to create something that will.” - Chuck Palahniuk

  3. #3
    Join Date
    May 2007
    Location
    Kansas City, Missouri
    Posts
    13,106
    Oh, now that is cool and soooo simple, having a duh moment, why couldn't I have thought of that.

    Now in that second to last pic, it looks like the end finger may be out of square, but I guess you could had a wider backer block with two screws to stabilize/square it. Thanks for sharing!
    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
    Join Date
    Jul 2011
    Location
    The Gorge Area, Oregon
    Posts
    4,595
    Good stuff!

    What hardware did you use to fasten the fingers to the T track? I can't quite tell from staring at it

  5. #5
    Join Date
    May 2010
    Location
    Orland Park, Illinois, USA
    Posts
    264
    1/4-20 socket head screw with 1/4-20 nut in the track .. Click image for larger version. 

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  6. #6
    Join Date
    Jul 2011
    Location
    The Gorge Area, Oregon
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    4,595
    Quote Originally Posted by Robert Horky View Post
    1/4-20 socket head screw with 1/4-20 nut in the track .. Click image for larger version. 

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    Thanks!

  7. #7
    Join Date
    Mar 2014
    Location
    Michigan
    Posts
    144
    Very nice work! To make good box joints, one must know how to make wood square, and that you have proven you can do. Bravo. I'm presently immersed in the "land of box joints" myself. Still have some work to do.
    Kevin

    In arte voluptas - in der Kunst liegt Vergnügen - in art lies enjoyment

  8. #8
    Join Date
    May 2007
    Location
    Thomasville, GA
    Posts
    5,758
    Very nice, Robert! Your joints look real good!
    Bill Arnold
    Citizen of Texas residing in Georgia.
    NRA Life Member
    Member of Mensa
    Live every day like it's your last, but don't forget to stop and smell the roses.

  9. #9
    Join Date
    Dec 2006
    Location
    Yorktown, Virginia
    Posts
    4,830
    A great idea. Joints look nice and this seems like the answer for those larger pieces that would be difficult to do on a table saw because they were too tall.

  10. #10
    Join Date
    Feb 2012
    Location
    St. Catharines, Ontario, Canada
    Posts
    2,683
    Looks very good! Same idea as my commercial one, but bigger and more versatile.
    Cheers,
    Roger


    The other member of Mensa, but not the NRA

    Everyone is a self-made person.

    "The thing about quotes on the internet is that you cannot confirm their veracity" -Abraham Lincoln

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