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  1. 21st September 2010, 08:12 PM #1
    Big Shed's Avatar
    Big Shed
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    Default I need a new knob.........

    ........for the steering wheel of my Kubota tractor as the old one decided to split in two.

    Decided to do something a bit different and make a new one from a Banksia nut, one of several I bought at the last WWW Show in Melbourne.
    The idea will be to cast one in <acronym title="Google Page Ranking">PR</acronym>, tinted to the Kubota orange.

    Never turned these Banksia nuts before so had a play first.


    They are hard but not too difficult to turn.

    When you cut one in half it shows an interesting pattern, for some reason I expected the inside to be partly hollow.


    Roughly turned to the shape of a small yoghurt container to be used as the mould.


    Whilst the <acronym title="Google Page Ranking">PR</acronym> was curing in the pressure pot, I turned a nylon bush for the shaft to turn in (even though the shat sits in a bearing on the steering wheel attachment)


    Once the <acronym title="Google Page Ranking">PR</acronym> was cured, it was mounted on the (metal) lathe and a tenon cut on one end so the 3 jaw chuck could grip it properly.


    Once this was done, turned it to an oversize cylinder, drilled a hole in what is going to be the small end of the knob and tapped it to 3/8BSW


    Cut a 3/8 Whitworth bolt to use as a mandrel.


    It was then transferred to the wood lathe and turned to roughly the same shape as the old knob.
    When I was almost finished one of the seed pods lost its' <acronym title="Google Page Ranking">PR</acronym> and I had to mix some more resin and fill that seed pod, using some blue-tack as a little dam to contain the resin.

    Attachment 148096

    That fixed that little problem and on to finishing. Decided to try CA and see how it goes outside.

    Attachment 148097

    With the nylon bush pressed in and the shaft fitted it was ready to go on the Kubota steering wheel, shiniest item on the tractor!

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  2. 21st September 2010 08:12 PM # ADS
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  3. 21st September 2010, 08:33 PM #2
    woodturner777
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    Default I need a new Knob

    Hew, Had me worried there for a while when I seen the thread, I need a new knob.
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  4. 21st September 2010, 08:36 PM #3
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    Default

    What happened Fred? No pics.

    Allan
    Life is short ... smile while you still have teeth.
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  5. 21st September 2010, 09:07 PM #4
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    Default

    Quote Originally Posted by Allan at Wallan View Post
    What happened Fred? No pics.

    Allan
    Don't know Allan, I could see them here, but just to be sure I have uploaded them again.
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  6. 21st September 2010, 09:17 PM #5
    Manuka Jock
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    Default

    Mate , thats' a knob that Pinocchio would be proud to have
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  7. 21st September 2010, 10:29 PM #6
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    Default

    nice knob
    troy

    tutorial for one piece slimline pen
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  8. 21st September 2010, 10:38 PM #7
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    Default

    Great job Fred, looks fantastic

    Quote Originally Posted by Big Shed View Post
    ..When I was almost finished one of the seed pods lost its' <ACRONYM title="Google Page Ranking">PR</ACRONYM> ...
    Don't you hate that Little bugg_rs love to jump . Thin CA when you are getting close to size helps
    Neil
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  9. 21st September 2010, 10:42 PM #8
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    Default

    Now that's a knob that other knobs would be rightly jealous of


    btw: just stole your idea re the blu tack
    regards
    Nick
    veni, vidi,     tornavi
    Without wood it's just ...
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  10. 21st September 2010, 11:19 PM #9
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    Default

    Thanks guys, must say it was a fun project, nice to put all the skills together and come up with something useful.

    Quote Originally Posted by dai sensei View Post

    Don't you hate that Little bugg_rs love to jump . Thin CA when you are getting close to size helps
    Will keep that in mind Must say it would be nice to find something that improves the adhesion of PR to wood.

    Quote Originally Posted by Sawdust Maker View Post

    btw: just stole your idea re the blu tack
    Didn't really fancy the idea of putting it back in to another yoghurt container and start turning all over again. I use the blu tack mainly when I photograph my pens to keep the little festers in place.
    Just from the $2 shop, probably why it isn't blue?
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  11. 22nd September 2010, 12:24 AM #10
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    Default

    Hey Big Shed

    WOW that is awsome I love it , Now that is some to bost about

    Cheers Nai84
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  12. 22nd September 2010, 09:22 AM #11
    Paul39
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    Default

    Very nice!

    What is PR?
    So much timber, so little time.

    Paul
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  13. 22nd September 2010, 09:33 AM #12
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    Quote Originally Posted by Paul39 View Post
    Very nice!

    What is PR?
    Polyester Resin
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  14. 22nd September 2010, 12:02 PM #13
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    Spiffy...neat project Big Shed.
    Cheers,
    Ed

    Do something that is stupid and fun today, then run like hell !!!
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  15. 22nd September 2010, 02:29 PM #14
    Hors
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    Default Big Red Knob

    Outstanding job.

    Great use of a couple of mediums, and different tools.

    Out of interest (as a newbie) what is your lathe (wood) model and what are your thoughts on it.

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  16. 22nd September 2010, 03:17 PM #15
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    Default

    I hate to say this but that is a fine looking knob

    I may have to do the same for my John Deer. Well its only a ride on but it is missing a knob
    Cheers Rum Pig

    It is easier to ask for forgiveness than permission.
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