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  1. #1
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    Default New Project "The Politician"

    Greetings to all, with the hope that no one has been affected by the virus which seems to lurk around every corner.

    A politician, standing as they do in front of flags carefully arranged, an expensive fituout, and a suitably
    large, imposing lectern, is holding forth. As they do. The figure will be 800mm tall. The work began with the head, which will eventually have eyes which move side to side and up /down, will turn and nod, the arms will gesticulate, and the body will turn and bow. That is, IF I can figure out how to do all that !
    The head began as a 90mm sq block of Huon Pine, was 28 hours in the carving vice.


    Carved Head.jpg

    The interior is carved out to receive the eye movement mechanism

    Head interior.jpg

    The mechanism for the moving eyes follows, probably as a prototype, unless I get lucky with construction.

    Thanks for looking,

    Regards,
    Gus

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  3. #2
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    crowie is online now Life's Good, Enjoy each new day & try to encourage
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    The eyes will have to be shofty Gus for a politician.

  4. #3
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    Guess so Peter ! Looking this way and the other, down mostly ?

  5. #4
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    Looking forward to this Gus. The head looks fantastic

    Regards

    Keith

  6. #5
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    Default WIP "The Politician Eyes Mechanism

    The eye mechanism is complete, bar some final adjustments, 55 hours including three rejects, all learning experiments.
    The front viewHead:Eyes.jpg
    Mechanism,Eye mechanism.jpg
    The rear, showing the cables and connecting barControl cables.jpg
    Installed inside the head,Eyses Installed.jpg

    A short video of how it works, not cam controlled yet, just by hand. The eyes need a bit of adjustment, the character is a little cross eyed. Maybe I leave them, there are a few cross eyed politicians..

    MVI_5583.mp4

    Thanks for looking,

    Regards,
    Gus

  7. #6
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    Top work Gus.

    Soon you will be making androids for sci-fi shows

    Regards

    Keith

  8. #7
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    Thanks Keith ! Sometimes when walking around the workshop, I notice it looking wordlessly, it is a surprise.
    By the way, that gold from Dulux is good news, the Knight brand looked good for a while, but soon looked like old brass, thank you for finding it.
    Regards,
    Gus

  9. #8
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    Default WIP Body Mechanicals

    The body frame, and its control mechanisms is mostly complete. All work as they should, although moved only by hand yet, the cams which will eventually control everything are to follow. Next is making a "skeleton" which will fill out the body so the clothing will be supported.



    Front View.jpg

    The controls on the front,

    Front.jpg

    Controls on the rear,

    Rear .jpg

    Another view of the front and rear,

    Front detail (2).jpg Rear detail (1).jpg

    Skeleton work follows,

    Thanks for viewing,
    Regards,
    Gus

  10. #9
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    Intricate , clever work Gus.

    You are a master at Automata.

    Great Stuff

    Regards

    Keith

  11. #10
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    Thank you Keith ! Please confirm if my information is true or false. Turning brass, is a back angle not neccessary on high speed tooling ?

    Regards,
    Gus

  12. #11
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    Gus,

    Found this on - line for you. I don't turn brass. I cheat - I turn aluminium and then paint it as brass - cheaper as well. I use normal rake angle on TC tip tool.

    Trouble turning brass by a very inexperienced engineer | Model Engineer

    Regards

    Keith

  13. #12
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    Thanks very much Keith, there is a wealth of information, just in that short discussion on the subject.

    Regards,
    Gus

  14. #13
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    Default WIP The "Skeleton"

    A friend's wife has kindly offered to sew a suit for the character. Phew ! Dodged that bullet ! To flesh out the body so it can be fitted with a tailor made outfit, a series of ply bones have been attached over the frame and the mechanicals. For now, that means a pause while the sewing is completed, however long that will be.

    IMG_1941.jpg IMG_1940.jpg

    Thanks for viewing,

    Regards,
    Gus

    I wish our Victorian friends on the forum safety from the marauder !

  15. #14
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    Looks great Gus.

    Unfortunately some outbreaks in NSW now. All please keep safe.

    Regards

    Keith

  16. #15
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    Default WIP "The Politician" - The Engine

    Having decided that the automaton must be in fully working condition prior to handing it over for dressing, I have continued with the build.
    The crankshaft since the photo was taken has been replaced by a larger dia brass tube. The previous 6mm couldn't handle the torsion applied by the motor. I mark and cut the cams in pairs, one each side of the centre support. As the load increased with each two addition, it also became obvious that the motor struggled. At six cams, the need for more power became clear. A very supportive member, Poundy, kindly offered some motors he had to experiment with, an offer "too good to refuse". Due to cataract operation, I have yet to progress with that.

    This photo shows the blank cams and the motor. A set of worm gears reduce the RPM from 55 to 68 seconds, perfect speed for what I imagine is ideal for the sequence. That, of course, is subject to revision, once the right motor is found.

    Blank Cams.jpg

    The "engine". Cams, motor housing and the cam followers. The whole assembly can be removed in one piece, the cam followers can be removed individually, and the cable attachments are adjustable for fine tension alterations. A new motor will probably require scrapping this whole "engine". But, that is the nature of making automata, and are for me the most satisfying aspects. Must be a personality flaw....

    Crankshaft.jpg

    Thanks for watching,

    Regards,
    Gus

    Be Safe !

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