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  1. #11
    m_c's Avatar
    Lives in East Lothian, United Kingdom. Last Activity: 3 Days Ago Forum Superstar, has done so much to help others, they deserve a medal. Has been a member for 9-10 years. Has a total post count of 2,908. Received thanks 360 times, giving thanks to others 8 times.
    The InTurn development thread can be found on the mach forums - http://www.machsupport.com/forum/ind...c,11422.0.html

    IIRC lots of the design aspects were discussed, but it's been a while since I've read through the thread. It's certainly worth having a read if you've got a couple spare hours.

    It's a good solution, but the downsides are lathe tool mounting, having to swap the belt to change speeds, and having to continually install/uninstall it.
    I can see the appeal if you're limited for space, but I'd opt for a decent lathe.


    Lathe spindles are not complicated. Spindle, housing, couple bearings. Job done. The problem is the spindle itself, as you either need to start with a big lump of metal and remove most of it, make it out of two parts and weld/screw it together, or get it forged. And if you want to use a Camlock chuck, you need to find the correct specification document with all the dimensions (Chuck specs are easy to find, but the spindle specs not so).
    Off course, you could buy a spindle - http://www.posa-spindle.com/en/index or http://www.royal-spindles.com.tw/
    There is the possibility of a headstock from a more hobby type lathe, but I'm not sure who would supply something like that in the UK.
    Avoiding the rubbish customer service from AluminiumWarehouse since July '13.

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  3. #12
    Chaz's Avatar
    Lives in Ickenham, West London, United Kingdom. Last Activity: 3 Weeks Ago Has been a member for 9-10 years. Has a total post count of 1,600. Received thanks 110 times, giving thanks to others 69 times.
    Quote Originally Posted by m_c View Post
    The InTurn development thread can be found on the mach forums - http://www.machsupport.com/forum/ind...c,11422.0.html

    IIRC lots of the design aspects were discussed, but it's been a while since I've read through the thread. It's certainly worth having a read if you've got a couple spare hours.

    It's a good solution, but the downsides are lathe tool mounting, having to swap the belt to change speeds, and having to continually install/uninstall it.
    I can see the appeal if you're limited for space, but I'd opt for a decent lathe.


    Lathe spindles are not complicated. Spindle, housing, couple bearings. Job done. The problem is the spindle itself, as you either need to start with a big lump of metal and remove most of it, make it out of two parts and weld/screw it together, or get it forged. And if you want to use a Camlock chuck, you need to find the correct specification document with all the dimensions (Chuck specs are easy to find, but the spindle specs not so).
    Off course, you could buy a spindle - http://www.posa-spindle.com/en/index or http://www.royal-spindles.com.tw/
    There is the possibility of a headstock from a more hobby type lathe, but I'm not sure who would supply something like that in the UK.
    Thanks. Good info.

    I sometimes see Boxford lathe headstocks (or similar) being sold for around £250 on fleabay. Is that not worth looking at?

  4. #13
    I see the appeal of Inturn like 4rth axis if you are doing stuff like gears, pulleys, small intricate parts. Basically what i believe is worth having at home for a CNC lathe. Now if you want a CNC lathe for bigger parts that do not need indexing, i agree its not the best choice.

    i am waiting for the day to come, but basically what i am going to do is fit to my mini lathe 700w servo motor, additional hydraulic disc brake from bycicle and thats it. Fit it in my machine. maybe change to bigger chuck.
    project 1 , 2, Dust Shoe ...

  5. #14
    m_c's Avatar
    Lives in East Lothian, United Kingdom. Last Activity: 3 Days Ago Forum Superstar, has done so much to help others, they deserve a medal. Has been a member for 9-10 years. Has a total post count of 2,908. Received thanks 360 times, giving thanks to others 8 times.
    Something like a boxford headstock would work. Ultimately suitable headstocks depend on how big a bit of metal you want to be able to fit through them. The bigger you'd like, the fewer and more expensive the options.

    However, if you design it with a bolt on headstock (which you'll really want anyway for alignment purposes), then swapping at a later date won't be as big of a challenge.
    Avoiding the rubbish customer service from AluminiumWarehouse since July '13.

  6. #15
    Chaz's Avatar
    Lives in Ickenham, West London, United Kingdom. Last Activity: 3 Weeks Ago Has been a member for 9-10 years. Has a total post count of 1,600. Received thanks 110 times, giving thanks to others 69 times.
    My thoughts are something like these:-

    http://www.ebay.co.uk/itm/BOXFORD-HE...YAAOSw32lYuejJ

    or

    http://www.ebay.co.uk/itm/MYFORD-ML1...8AAOSwxu5ZOIUw

    Is the cheaper Chinese stuff worth considering - like this - http://www.ebay.co.uk/itm/Headstock-...MAAOSw8gVX2sAJ ?

  7. #16
    Ross77's Avatar
    Lives in Devon, United Kingdom. Last Activity: 2 Weeks Ago Has been a member for 9-10 years. Has a total post count of 759. Received thanks 27 times, giving thanks to others 52 times.
    I picked the Colchester Chipmaster as its a tool room spec lathe and had the spindle capacity that i needed. had a lever operated collet chuck as well. bonus :0)

  8. #17
    m_c's Avatar
    Lives in East Lothian, United Kingdom. Last Activity: 3 Days Ago Forum Superstar, has done so much to help others, they deserve a medal. Has been a member for 9-10 years. Has a total post count of 2,908. Received thanks 360 times, giving thanks to others 8 times.
    Quote Originally Posted by Chaz View Post
    My thoughts are something like these:-

    http://www.ebay.co.uk/itm/BOXFORD-HE...YAAOSw32lYuejJ

    or

    http://www.ebay.co.uk/itm/MYFORD-ML1...8AAOSwxu5ZOIUw

    Is the cheaper Chinese stuff worth considering - like this - http://www.ebay.co.uk/itm/Headstock-...MAAOSw8gVX2sAJ ?
    I think I'd go for the Boxford or Chinese option. My original CNC lathe was based on an ML10, and I always thought the spindle was a bit noodly.

    Before deciding on a headstock, you need to think about what size of bar you want to be able to fit through it.
    ML10 limit was a 5/8" throughbore IIRC (I used an adjustable reamer to open mine up so I could fit 16mm bar in). That CJ16 should be 20mm, and a quick search puts the Boxford at 3/4".
    Avoiding the rubbish customer service from AluminiumWarehouse since July '13.

  9. #18
    That Boxford seems very nice. Nothing beats buying a complete head stock.
    project 1 , 2, Dust Shoe ...

  10. #19
    Chaz's Avatar
    Lives in Ickenham, West London, United Kingdom. Last Activity: 3 Weeks Ago Has been a member for 9-10 years. Has a total post count of 1,600. Received thanks 110 times, giving thanks to others 69 times.
    I'm tempted to buy this.

    http://www.ebay.co.uk/itm/Smart-Brow...QAAOSwyltZWUgD

    It's tatty, might work as a manual lathe, I Can then break it down and take / keep the headstock. Not sure if its worth trying to convert it, just use as is until I am ready to take the headstock.

  11. #20
    Quote Originally Posted by Chaz View Post
    I'm tempted to buy this.

    http://www.ebay.co.uk/itm/Smart-Brow...QAAOSwyltZWUgD

    It's tatty, might work as a manual lathe, I Can then break it down and take / keep the headstock. Not sure if its worth trying to convert it, just use as is until I am ready to take the headstock.
    Thats what i was saying, Mini lathe + servo motor and brake and fit inside the machine.

    Cause once you restore it , it will be beautiful and difficult to salvage it for parts
    project 1 , 2, Dust Shoe ...

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