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  1. #16
    Join Date
    Dec 2011
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    Rosebery/Eastlakes
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    115

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    Quote Originally Posted by Steamwhisperer View Post
    Bugga.
    The chuck will definitely just unscrew with a right hand thread on the headstock spindle.
    A couple of years ago where I worked (in the best job I ever had) we got an old Servian lathe and apparently the chuck hadn't been off for over 40 years.
    To get it off I strategically placed a piece of wood on the lathe bed the opposite side to where you stand and opened one of the jaws so that when the chuck was rotated backwards the jaw would land on top of the piece of wood in about the horizontal plane.
    After several attempts at rotating the chuck backwards by hand making the chuck jaw hit the piece of wood, it came loose.
    An old tradesman taught me this method years ago and it actually worked. Shocked the pants off me it did.
    This may or may not work on the New Visby though having used one a bit where I was an apprentice I know they are a nightmare if the chuck was slammed home during installation. They should just be gently screwed up to the collar

    Phil
    I tried your method Phil. There's something to be said about the knowledge and expertise of old tradesmen..

    20190707_200943L.jpg

    The chuck must have weighed 25 to 30kg.. it was very heavy.. I had it blocked up with timber so that it didn't fall when I removed it..

  2. #17
    Join Date
    Sep 2012
    Location
    York, North Yorkshire UK
    Posts
    6,439

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    Hi Flo,

    Now that you have got that chuck off, its very important that the threads and register, both on the spindle and in the chuck are kept scrupulously clean and well lubricated. Otherwise you might find that a speck of swarf in the threads or on the register will make it very hard to unscrew when you come to remove it next time.
    Best Regards:
    Baron J.

  3. #18
    Join Date
    Sep 2011
    Location
    Ballarat
    Age
    65
    Posts
    3,103

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    Quote Originally Posted by Flo View Post
    I tried your method Phil. There's something to be said about the knowledge and expertise of old tradesmen..
    Hi Flo
    that is fantastic news. It would be a good idea to heed Barons advice and make sure the threads are meticulously clean plus the face that meets with the corresponding face on the chuck backplate.

    Phil

    New Visby spindle.jpg

  4. #19
    Join Date
    Dec 2011
    Location
    Rosebery/Eastlakes
    Posts
    115

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    Quote Originally Posted by BaronJ View Post
    Hi Flo,

    Now that you have got that chuck off, its very important that the threads and register, both on the spindle and in the chuck are kept scrupulously clean and well lubricated. Otherwise you might find that a speck of swarf in the threads or on the register will make it very hard to unscrew when you come to remove it next time.
    Good suggestion.. I have to pull the spindle out to try and separate the low gear and the dog as I really don't want to be grinding in-situ.. once I'm done it'll get a good clean and lube..

  5. #20
    Join Date
    Dec 2011
    Location
    Rosebery/Eastlakes
    Posts
    115

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    Quote Originally Posted by Steamwhisperer View Post
    Hi Flo
    that is fantastic news. It would be a good idea to heed Barons advice and make sure the threads are meticulously clean plus the face that meets with the corresponding face on the chuck backplate.

    Phil

    New Visby spindle.jpg
    Agreed.. The chuck is going to get disassembled and inspected as there is a tonne of wear in the pinions and jaws. I love mucking around with this stuff.. I'm like a kid in a lolly shop!

    Does this spindle type have a proper designation?

    Apologies to all for my amateurish questions regarding this lathe, and unfortunately there's plenty more where those came from! Not being a machinist by trade I am learning as I go and very much appreciate the wealth of knowledge on this forum and those willing to share it!

  6. #21
    Join Date
    Aug 2008
    Location
    Charlestown NSW
    Age
    65
    Posts
    1,669

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    Quote Originally Posted by Flo View Post

    Apologies to all for my amateurish questions regarding this lathe, and unfortunately there's plenty more where those came from! I am learning as I go and very much appreciate the wealth of knowledge on this forum and those willing to share it!
    No need to be sorry. You are keen to learn about this stuff and that is something that seems to becoming more and more rare with younger people.
    As for "Not being a machinist by trade" so what? As above, you are keen to learn. I know of one bloke on this forum who doesn't have a trade in fitting and machining, is pretty much self taught, and is a far better machinist than a lot of trained machinists - and I include myself in that group as well. I'm sure a lot of the others are in the same situation.

    best of
    peter

  7. #22
    Join Date
    Oct 2011
    Location
    Norwood-ish, Adelaide
    Age
    59
    Posts
    6,540

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    Quote Originally Posted by Flo View Post
    Does this spindle type have a proper designation?
    Not like a camlock D1-4 or L0. It's just referred to as a screw on spindle; specified by the diameter and the thread pitch (a lot of these screw on spindles are 8tpi.)

    Michael

  8. #23
    Join Date
    Dec 2011
    Location
    Rosebery/Eastlakes
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    115

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    Quote Originally Posted by bollie7 View Post
    No need to be sorry. You are keen to learn about this stuff and that is something that seems to becoming more and more rare with younger people.
    As for "Not being a machinist by trade" so what? As above, you are keen to learn. I know of one bloke on this forum who doesn't have a trade in fitting and machining, is pretty much self taught, and is a far better machinist than a lot of trained machinists - and I include myself in that group as well. I'm sure a lot of the others are in the same situation.

    best of
    peter
    Hi Peter..

    Thanks for your encouragement.. I'm not that old but I'm not that young either (48).. I just love giving things a go!

  9. #24
    Join Date
    Aug 2008
    Location
    Charlestown NSW
    Age
    65
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    Quote Originally Posted by Flo View Post
    Hi Peter..

    Thanks for your encouragement.. I'm not that old but I'm not that young either (48).. I just love giving things a go!
    Funnily enough, after I made my last post I thought to myself "Myself, I have no idea how old Flo is". I just assumed you were a younger person. You are still younger than me though.
    p

  10. #25
    Join Date
    Dec 2011
    Location
    Rosebery/Eastlakes
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    115

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    Quote Originally Posted by Michael G View Post
    Not like a camlock D1-4 or L0. It's just referred to as a screw on spindle; specified by the diameter and the thread pitch (a lot of these screw on spindles are 8tpi.)

    Michael
    Hi Michael..

    Thanks for that.. So if I needed to fit a new chuck I'm assuming that I'd need to machine a backplate to suit the spindle and then mount the chuck to the backplate?

  11. #26
    Join Date
    Dec 2011
    Location
    Rosebery/Eastlakes
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    115

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    Quote Originally Posted by bollie7 View Post
    Funnily enough, after I made my last post I thought to myself "Myself, I have no idea how old Flo is". I just assumed you were a younger person. You are still younger than me though.
    p

    Haha! Not by that much so its all good mate.. I'll be learning new things until I fall off the twig.. I just wish I'd have started this journey 20 years ago!

  12. #27
    Join Date
    Feb 2014
    Location
    Werribee, Melbourne
    Posts
    177

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    Quote Originally Posted by Flo View Post
    Hi Michael..

    Thanks for that.. So if I needed to fit a new chuck I'm assuming that I'd need to machine a backplate to suit the spindle and then mount the chuck to the backplate?
    Maybe, maybe not - there are quite possibly some suitable backplates sitting under benches.

    I have this one I picked up with the intention of machining into an adaptor for my Macson but if it is a match then it would obviously be a crime to do that.



    The thread is is 2 5/8" x 6TPI at a rough measurement so a reasonably beefy one and if that looks close I can get some more accurate dimensions.
    Ray

  13. #28
    Join Date
    Dec 2011
    Location
    Rosebery/Eastlakes
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    115

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    Quote Originally Posted by Ray-s View Post
    Maybe, maybe not - there are quite possibly some suitable backplates sitting under benches.

    I have this one I picked up with the intention of machining into an adaptor for my Macson but if it is a match then it would obviously be a crime to do that.



    The thread is is 2 5/8" x 6TPI at a rough measurement so a reasonably beefy one and if that looks close I can get some more accurate dimensions.
    Ray
    Hi Ray,

    Thanks for offering but the spindle thread measures approximately 3.27" (roughly 83mm) OD.. The spindle bore is 2.177" (roughly 55mm).. Looks like your Macson will be getting a new adaptor..

    Flo

  14. #29
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    Sep 2011
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    Ballarat
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    65
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    Quote Originally Posted by Flo View Post
    Apologies to all for my amateurish questions regarding this lathe, and unfortunately there's plenty more where those came from! Not being a machinist by trade I am learning as I go and very much appreciate the wealth of knowledge on this forum and those willing to share it!
    I agree with Peter (Bollie7), there is no need to be sorry. Admittedly there might be other forums around that aren't so forgiving but it's certainly not the case with this forum.
    As they say, "there are no stupid questions, just some stupid answers". At least you are asking, and make sure you keep on asking, It's a lot safer that way as well. Oh, and keep up with the pics, we love pics.

    Phil

  15. #30
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    Dec 2011
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    Rosebery/Eastlakes
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    Quote Originally Posted by Steamwhisperer View Post
    I agree with Peter (Bollie7), there is no need to be sorry. Admittedly there might be other forums around that aren't so forgiving but it's certainly not the case with this forum.
    As they say, "there are no stupid questions, just some stupid answers". At least you are asking, and make sure you keep on asking, It's a lot safer that way as well. Oh, and keep up with the pics, we love pics.

    Phil
    Thanks Phil..

    I'll keep the pics coming.. if for no other reason than to build the body of knowledge about the Purcells.. there doesn't seem to be very much info around on them..

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