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Thread: Spriral Bowl

  1. #1
    Join Date
    Dec 2011
    Location
    Harrington, NSW
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    Default Spriral Bowl

    I brought this thread over from "Finishing" where I had some good advise on an old bowl I need to finish.

    I added this to the last posting and wondered if anyone here might suggest something.

    Old Post ---->
    Yeah I like that "Patina"

    I think it is as you say the timber has bleached rather than a problem with the finish.

    It gets lots of use and the bowl is liked for what it is so I will prolly leave it and go to another project.

    I know it's off topic but has anybody ever turned a spiral bowl.

    I tried it once with Cedar and Pine . Made two identical helical cuts and tried to interleave them. When I glued them up I had great difficulty in getting the "sprung" helical pieces to hold together.
    I guess I created some spring tension.
    Still an idea I have been chucking (Sorry) around in my head for a while.

    Would appreciate feed back.
    Thanks
    Andy

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  3. #2
    Join Date
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    Default

    Andy do a search for Hughie and see his creations of spiral bowls.

  4. #3
    Join Date
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    Gluing together "sprung" pieces you really need to use epoxy or resorsinol glue. Plain ol' PVA has too much flexability and will "creep" and eventually delaminate. (With the resisinol you can dial in a bit of flexability by adding pva. Sometimes epoxy will crack from not having any give at all. )
    anne-maria.
    T
    ea Lady

    (White with none)
    Follow my little workshop/gallery on facebook. things of clay and wood.

  5. #4
    Join Date
    Dec 2011
    Location
    Harrington, NSW
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    Default

    Could not spiral like I wanted so I did this -
    Tasmanian Huon Pine 250mm blank picked up in Tassy and Australian Red Cedar ellipse.

    Finished in Poly 300 600 1200 Cutting Compound - Wax

    Son's got it filled with apples


    20180826_074942.jpg
    20180826_074951.jpg
    20180826_074959.jpg

  6. #5
    Join Date
    Jun 2010
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    5 years is a looooong WIP!

    Well done, it looks pretty cool. What glue method did you use in the end?
    Nothing succeeds like a budgie without a beak.

  7. #6
    Join Date
    Dec 2011
    Location
    Harrington, NSW
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    Default

    Don't know what a WIP is.
    I actually finished it a while ago but I was posting a project in the boxmaking forum so I though I would bung the bowl in too.

    I had the blank Huon cylinder diagonally sliced in half across the round side with a large band saw down at the local men's shed. We made a sled jig to screw to the face of the blank to hold it steady.

    The Red Cedar was arranged and pre glued in a segmented style a bit like pie pieces in between the cut pieces of pine onto the diagonal cut.. This gave me a lot of side grain in the Cedar to present to the lathe chisels.

    Glueing up was terrible as the pieces of pine now cut like wedges slippery with glue wanted to slide apart each time I clamped the lot together. I had about 6 clamps around the circumference of the lot holding down of the opposing faces. I had it fall apart twice and had to wash the glue off each time. The answer eventually was to use long sash clamps at 90deg to the faces and at right angles to the main clamps. The sash cramps stopped the wedges sliding apart while I got pressure on the faces. It ended up being quite solid and held together well - used Triton Premier Wood Glue.

    Wonderful stuff to cut on the lathe with a rich pine oil aroma. Must get some more to play with.

  8. #7
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    WIP = Work In Progress

    That glue-up sounds like a major headache but you persevered with it; many would have given up the first time it fell apart!

    Seriously though, that’s a good bit of work there and I wouldn’t blame your son for deciding to inherit it a little early! My daughter has claimed a clock I’m restoring but is graciously allowing me to hold it for her...
    Nothing succeeds like a budgie without a beak.

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