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  1. #1
    Join Date
    Oct 2010
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    NSW
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    652

    Default Sundays' Turning

    G'day all

    Haven't had much shed time of late but got there yesterday and turned a small (140x60) Myrtle bowl with black plastic (pipe fitting) and Huon Pine inlayed rim.

    Unfortunately the Huon Pine developed 6 or 7 fine cracks during sanding/finishing. The finish is EEE and Glow.

    I have never used plastic as an inlay before and I am blaming it for heat creation/induction into the Huon.

    Any thoughts anyone.

    Anyway I'm about to go for another first - attaching pics. Wish me luck!


    Cheers
    Picko

    Attachment 152391

    Attachment 152392

    Attachment 152393

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  3. #2
    Join Date
    Oct 2007
    Location
    Horsham Victoria
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    901

    Default

    Excellent work Picko. Good form and the inlay design works very well. Cracks in Huon are called heat checks. These are created from the friction generated in the sanding process that heats the resin in the timber and cracks the wood. Sand with a slow lathe speed and apply minimal pressure on sandpaper. Heat checks are uncommon with a lot of Aussie timbers because of the low resin content in them but Huon Pine (indeed any pine) is one you need to be careful with.

  4. #3
    Join Date
    Oct 2010
    Location
    NSW
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    Default

    Thanks Brendan. I was aware of heat checking but have never experienced it before.

  5. #4
    Join Date
    Mar 2007
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    Munruben, Qld
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    Default

    Well done, looks great. Finish has come up really well.
    Reality is no background music.
    Cheers John

  6. #5
    Join Date
    Nov 2007
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    Dundowran Beach
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    19,922

    Thumbs up

    Very well done Picko.!!!

    The fine cracks in the HP might be friction cracks caused by overheating when sanding.

    Slowing the lathe down to sand will help and not holding the paper on for long periods also cuts the heat build up.

  7. #6
    Join Date
    Oct 2010
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    NSW
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    Default

    Thanks all. Might sneak to the shed again tonight.

    Picko

  8. #7
    Join Date
    Dec 2001
    Location
    Pomona, QLD
    Age
    73
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    546

    Default

    If you have problems with heat checking back off on the speed and pressure when sanding, always keep the sandpaper moving. Also one of those rotary sanding thingies work really well and avoids heat checking.

    Good to see that you are being creative and looking for something different re the inlay, well done.

    Peter



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  9. #8
    Join Date
    Aug 2010
    Location
    Baldivis WA
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    40
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    2,761

    Default

    Very nice i love the colours they all blend well and the form is awsome

    Ian

  10. #9
    Join Date
    Dec 2005
    Location
    Emerald, QLD
    Posts
    4,489

    Default

    Very effective rim enhancement - would never have thought of using plastic like that!
    .
    Updated 8th of February 2024

  11. #10
    Join Date
    Nov 2010
    Location
    Italy
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    35

    Default

    Well done,Picko!!!
    Simply a masterpiece,nothing else!!!
    Ciao,

    ALESSANDRO

  12. #11
    Join Date
    Oct 2008
    Location
    kings park Vic.
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    75
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    783

    Default

    Nice Work Picko. beautiful Form and a lovely Finish,Well Done.
    Cheers Tony,

  13. #12
    Join Date
    Jun 2006
    Location
    Burwood NSW
    Age
    82
    Posts
    1,247

    Default

    Nice job Picko .
    Any details of the black plastic pipe insert ?

    Ted

  14. #13
    Join Date
    Oct 2010
    Location
    NSW
    Posts
    652

    Default

    Thanks everyone.

    TTIT - I was just looking for a contrast and started looking around at what I had. Turns out it is probably what caused the Huon to overheat as I have turned plenty of Huon before and used as inlays without a problem.

    Ted - the plastic was the two into one fitting that was supplied with my dust extractor. I have the unit 'plumbed in' with take off points where required so the 'Y' fitting was kicking around the shed waiting for a start.

    I'm actually finding it hard to live with the cracks so might re-mount somehow and attempt a fix. Could end in disaster but it's all practise!

    Thanks again all

    Picko

  15. #14
    Join Date
    Oct 2010
    Location
    NSW
    Posts
    652

    Default Fixed

    Couldn't stand the cracked inlay any longer so did a dodgy remount, cut out the offending Huon Pine and re-did the inlay. Happy now.

    Picko

  16. #15
    Join Date
    Jun 2006
    Location
    Burwood NSW
    Age
    82
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    Default

    Interesting method of remounting .
    Looks good now .

    Ted

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