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Thread: Jig to cut siding boards to match roof pitch

  1. #1
    Join Date
    Oct 2006
    Location
    Southern Georgia
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    Jig to cut siding boards to match roof pitch

    Sometimes jigs are fancy things, made by a CNC out of billet, sometimes they're lovingly and meticulously hand-crafted from hardwood and finished like a piece of fine furniture.

    They always serve the same purpose...to allow repetitive precision.

    To that end, I show you my humble, yet accurate roof-pitch-matcher....my current favorite 'jig':

    Click image for larger version. 

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    It's neither made by machine from an exotic alloy, nor lovingly hand-crafted from hardwood. It's just a piece of 5/8"ply screwed onto a scrap of Cypress. I laid out an exact 5:12 mark with a speed square, then put the two together:

    Click image for larger version. 

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    I've used it all day for the last two days and it's been doing its job quite well.

    Not all jigs are fancy things...huh?

    - Marty -
    Fivebraids, Inc.
    When you earnestly believe you can compensate for a lack of skill by doubling your efforts, there’s no end to what you can’t do…

  2. #2
    Join Date
    Oct 2006
    Location
    The Ocean State
    Posts
    170
    Fancy no...but I will use it. I need to put up a cuppola on the garage...and it will come in handy.

  3. #3
    Join Date
    Oct 2006
    Location
    Southern Georgia
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    1,396
    Glenn,

    Sometimes fancy works, or is called for. But for doing something I don't plan to do again, simple and free is best. I slide that jig up against the end of the board and use it to guide my SkilSaw. Once I'm done cutting all the siding for both gable ends of the shop, that jig (minus the deck screws) will join the rest of the scrap in Denise's burn pile.

    Glad it might be helpful to you in a future project.

    - Marty -
    Fivebraids, Inc.
    When you earnestly believe you can compensate for a lack of skill by doubling your efforts, there’s no end to what you can’t do…

  4. #4
    Join Date
    Oct 2006
    Location
    Tokyo Japan
    Posts
    15,640
    Yep, that works!

    I love the simple and easy way!!

  5. #5
    Join Date
    Nov 2006
    Location
    Tokiwadai, Japan
    Posts
    2,882
    Marty,

    I've got a greenhouse to build, and your jig design will come in handy when I build the roof. Thanks.

    Greg

  6. #6
    Join Date
    Oct 2006
    Location
    Southern Georgia
    Posts
    1,396
    Quote Originally Posted by Greg Cook View Post
    Marty,

    I've got a greenhouse to build, and your jig design will come in handy when I build the roof. Thanks.

    Greg
    Greg,

    Glad I could make one small thing potentially easier. Let me know if you need pointers setting up the reference line for the jig using a speed square.

    - Marty -
    Fivebraids, Inc.
    When you earnestly believe you can compensate for a lack of skill by doubling your efforts, there’s no end to what you can’t do…

  7. #7
    Marty - that's my kind of jig!! Even stuff that is gonna be around for a while goes through several versions of "rough and ready" in my shop. I figure that the only way to know that something will work is to use it. After a couple of months of daily use I am ready to iron out the rough edges and build a more permanent version. Quite often the rough and ready does the job and the permanent version never gets built.

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