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Thread: Plate joining jig

  1. #1
    Christophe Mineau's Avatar
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    Christophe Mineau's Tools

    Plate joining jig

    Hi again,
    Here is my plate joining jig.



    Here you can see it at use, gluing the back of a viola.
    The purpose is to glue the two halves of a top or back plate for a stringed instruments.
    These plates can be either flat (for flattop instruments like acoustic guitars for instance) or have the shape of a wedge for carved instruments (bluegrass mandolin, jazz guitar, violin familly..).

    The traditional way of doing it is to use the "Spanish method", like can be seen here :
    http://mullinguitars.typepad.com/.a/...6f38989970c-pi
    but this method only work well with flat plates.

    The jig I use above has the advantage of being suitable for both kinds of instruments.
    There is a table, one fixed edge on one side, and above the center line, a kind of wooden bridge made of a round pole (it can be wood or even round steel tubing).
    The flat faces of the plates are kept flat on the table thanks to wooden wedges that insert between the plates and the above pole. You put wooden shims as necessary, depending on the plate shape.
    Add two big clamps to tighten and you have an easy way to do this strategic job when building an instrument.

    The seem must be invisible, so you need quite a bit of pressure.
    But you dont want the plates to lift because of the pressure, hence the jig.

    I forgot to say that I add a band of waxed paper under the joint to avoid the squeezing glue to stick the workpiece on the table.

    That's it !
    Cheers !
    Christophe
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    Visit my Website : http://www.labellenote.fr/
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  2. The Following 2 Users Say Thank You to Christophe Mineau For This Useful Post:

    kbalch (11-18-2014), Paul Jones (03-05-2017)

  3. #2
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    Thanks Christophe! I've added your Plate Joining Jig to our Woodworking category, as well as to your builder page: Christophe Mineau's Homemade Tools. Your receipt:


  4. #3
    Content Editor Altair's Avatar
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    Nice and simple. Love the wedge idea.

    Al

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    Brendon's Tools
    Hi Christophe,
    I like the simplicity of this jig.
    No messing about with ropes!
    Brendon
    Visit my blog at www.waneyedgeworkshop.com

  6. #5
    Christophe Mineau's Avatar
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    Christophe Mineau's Tools
    Thanks Brendon, by the way, good to read you, how are you ?
    Cheers !
    Christophe
    ________________________________________________________________
    Visit my Website : http://www.labellenote.fr/
    Facebook : La Belle Note
    All my personal works, unless explicitly specified, are released under
    Creative Commons BY-NC-SA license.

  7. #6

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    Brendon's Tools
    Hi Christophe,
    I am recovering from nasty bowel surgery
    and hoping to get back into my workshop soon.
    Can't wait to get back making something.
    It's been a long haul.
    Thanks for your concern.
    Hope you are well and making some beautiful musical instruments.
    Best Wishes,
    Brendon
    Visit my blog at www.waneyedgeworkshop.com

  8. #7
    Christophe Mineau's Avatar
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    Christophe Mineau's Tools
    Hi Brendon, I read your last post on your blog and left you a little word there also. Hope you will recover quickly and Im sure that building a fine new plane or chess set would be a good cure !
    Wishing you all the best,
    Christophe
    Cheers !
    Christophe
    ________________________________________________________________
    Visit my Website : http://www.labellenote.fr/
    Facebook : La Belle Note
    All my personal works, unless explicitly specified, are released under
    Creative Commons BY-NC-SA license.

  9. #8

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    Brendon's Tools
    Thanks Christophe,
    The workshop is great therapy all right.
    Best Wishes
    Brendon


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