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Thread: How to drill a hole on an inclined curved piece?

  1. #1
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    How to drill a hole on an inclined curved piece?

    Hi guys.

    I’m working on the design of my next project and I will need to make a round hole on a curved piece to pass a metal bar through it as in the pic.

    Click image for larger version. 

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    The problem is that the bar will behave as a stretcher, so I need to make the hole right and paralel to the floor line.
    Any hint about how I could do it?

    My only idea is using a squared piece of wood, make a perpendicular hole on it at the right height and of the right diameter, then and adapt it to the curve, clamp it to the piece to drill and use it as a guide, (see drawings) but I’m not so sure if it will work or not.

    This would be the squared piece.
    Click image for larger version. 

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    This would be piece adpated to the curve and being used as a guide.
    Click image for larger version. 

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    Any hint or better idea will be greatly appreciated
    Thanks in advance.
    Best regards,
    Toni

    __________________________________________________ __________________________________________________ _________________
    web site:http://www.toniciuraneta.com
    I also dream of a shop with north light where my hands can be busy, my soul rest and my mind wander...

  2. #2
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    Quote Originally Posted by Toni Ciuraneta View Post
    Hi guys.

    I’m working on the design of my next project and I will need to make a round hole on a curved piece to pass a metal bar through it as in the pic.

    ...My only idea is using a squared piece of wood, make a perpendicular hole on it at the right height and of the right diameter, then and adapt it to the curve, clamp it to the piece to drill and use it as a guide, (see drawings) but I’m not so sure if it will work or not.
    ...
    Your idea will work quite well, That's exactly how I'd do it.

    Another alternative would be to drill the hole before you cut the curve. Mark out the shape, then drill the hole while the stock is still straight, then cut the curve last.
    Jim D.
    Adapt, Improvise, Overcome!

  3. #3
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    My first choice is to mill such things prior to cutting the curves. If the piece is not cut from a large blank or is bent lamination (or just steam bent) a jig to hold it in position would be my approach. My one-off jigs sometimes get a little involved but, experience has shown me that the time and effort spent on the jig is less than the time and effort spent doing it other ways. Your squared off piece drilled and then cut to shape looks good. I would want another piece as a backer. What are the overall dimensions of the piece to be drilled?
    Any sufficiently advanced technology is indistinguishable from magic.
    - Arthur C. Clarke

  4. #4
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    Quote Originally Posted by glenn bradley View Post
    My first choice is to mill such things prior to cutting the curves. If the piece is not cut from a large blank or is bent lamination (or just steam bent) a jig to hold it in position would be my approach. My one-off jigs sometimes get a little involved but, experience has shown me that the time and effort spent on the jig is less than the time and effort spent doing it other ways. Your squared off piece drilled and then cut to shape looks good. I would want another piece as a backer. What are the overall dimensions of the piece to be drilled?
    They are the legs of a bench I'm designing, so the height will be 45cm and the bar will be about 20-25cm (10") from the floor, I am tweaking the design to avoid having to buy more lumber.
    Best regards,
    Toni

    __________________________________________________ __________________________________________________ _________________
    web site:http://www.toniciuraneta.com
    I also dream of a shop with north light where my hands can be busy, my soul rest and my mind wander...

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