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  1. #11
    Greeny's Avatar
    Lives in North Yorkshire, United Kingdom. Last Activity: 7 Hours Ago Has been a member for 8-9 years. Has a total post count of 102. Received thanks 12 times, giving thanks to others 7 times.
    Thanks Robin,
    However, am i right in thinking that's only possible when using unsupported round rails on z?

    I think I'm probably interpreting your drawing wrong, as there's a lot of stuff there and I'm not sure how it all fits together in 3d, do you have a side on view?

    Cheers
    Last edited by Greeny; 20-03-2017 at 02:48 AM.

  2. #12
    What you could do is slip pairs of linear blocks on to two pairs of linear rails, lay two rails on top of 2 rails at right angles then slide the blocks around a bit and see where the metal of the Y and Z slides can fit in around it.

    Does that make sense?
    Last edited by Robin Hewitt; 20-03-2017 at 03:55 PM.

  3. #13
    Greeny's Avatar
    Lives in North Yorkshire, United Kingdom. Last Activity: 7 Hours Ago Has been a member for 8-9 years. Has a total post count of 102. Received thanks 12 times, giving thanks to others 7 times.
    ok, will give it a go, thanks.

  4. #14
    Greeny's Avatar
    Lives in North Yorkshire, United Kingdom. Last Activity: 7 Hours Ago Has been a member for 8-9 years. Has a total post count of 102. Received thanks 12 times, giving thanks to others 7 times.
    Aha!
    I think i see now. Playing with two pairs of rails it took about 60 secs.
    I will take some photos & do a couple of drawings later this evening. (i'm supposed to be working now... shhh)
    Cheers

  5. #15
    Greeny's Avatar
    Lives in North Yorkshire, United Kingdom. Last Activity: 7 Hours Ago Has been a member for 8-9 years. Has a total post count of 102. Received thanks 12 times, giving thanks to others 7 times.
    Well i think Robin's idea is pretty nifty, but i don't think it's going to work for me, as the rails i have are not long enough!
    A good example of not buying until the design is finished!

    The only way i can get to sensibly work is as per the drawings below.
    The Z table must fit between the Y blocks which means the y blocks are spread quite wide.
    In this case restricting my Y movement to about 250mm which is too small (I'm aiming for 350mm)

    I do quite like it though, it makes for a wider Z assembly than usual, but makes it very compact in other respects . (always some tradeoffs!)

    Cheers
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  6. #16
    Greeny's Avatar
    Lives in North Yorkshire, United Kingdom. Last Activity: 7 Hours Ago Has been a member for 8-9 years. Has a total post count of 102. Received thanks 12 times, giving thanks to others 7 times.
    oops, forgot the ballscrew!
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