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  1. I am trying to keep the footprint of my cnc unit as small as possible, as I don't have a garage or big workshop to put it.

    As for your feedback, are you thinking something more along the lines of this?


    This was done quickly, and I know that I will have to adjust the spacing so that I am not covering over bolt holes etc.

    Thanks again for your time.

    Best Regards.
    Last edited by Mad Professor; 20-03-2012 at 06:34 PM.
    "If first you don't succeed, redefine success"

  2. #12
    Yes thats it's regards bearings and rails thou you don't need to have the motor going up & down with the Z axis if you don't want.!
    So long as your motor can handle the heavier weight then it will work ok but it can be done so the motor and screw stays on the Backplate reducing the amount of weight the motor as to move.
    Does mean the back plate has to be the same or just longer length than the screw with a plate at the top for the motor to mount to. Depending on length Could also mean notching the front plate at the top to miss the motor/plate.? but like I say this depends on front plate length but if does need it then it's at the top which you don't use and will be minor and of very little detriment strength wise.!

  3. Thanks for all your advice.

    I now have another design.


    What do we think about this one?

    Thanks for your time.

    Best Regards.
    "If first you don't succeed, redefine success"

  4. #14
    Quote Originally Posted by Mad Professor View Post
    Thanks for all your advice.

    I now have another design.
    BINGO!!

    If you want to push it a step further and increase it's versatilty thru gearing along with abilty to handle resonance better then think about using timing belts.? Thats how I build most of my Z axis.
    Here's a few pics of the one built for micheal marrino's machine, Micheal designed it mostly for his machine with slight guidance from me.
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  5. Thanks again for your time and feedback.

    I now hope for this to be my last design.


    I am using 752 Drivers, 3Nm stepper motors, and TR16x4 Leadscrews.

    Best Regards.
    "If first you don't succeed, redefine success"

  6. #16
    Absolutely spot on that my friend. .

  7. #17
    Quote Originally Posted by JAZZCNC View Post
    Absolutely spot on that my friend. .
    Yeah, sending the drawing and images of mine saved a lot of discussion.

    Now to make it...

  8. #18
    Quote Originally Posted by Jonathan View Post
    Yeah, sending the drawing and images of mine saved a lot of discussion.

    Now to make it...
    Well stop bragging and get on with it then. .

  9. #19
    Quote Originally Posted by JAZZCNC View Post
    BINGO!!
    Here's a few pics of the one built for micheal marrino's machine, Micheal designed it mostly for his machine with slight guidance from me.
    Well blow me down with a feather.

    I missed this the first time round (hence resurrecting the thread!) but that's almost exactly the X/Z setup I wanted to use (as in pulleys, orientation of steppers etc) though with profile rail and a fixed gantry..

    Was there a build thread on this? Any idea how it's been working out? Any design pitfalls to avoid?

  10. #20
    Quote Originally Posted by Mad Professor View Post
    Thanks again for your time and feedback.

    I now hope for this to be my last design.


    I am using 752 Drivers, 3Nm stepper motors, and TR16x4 Leadscrews.

    Best Regards.
    Hello Mad Professor, thankyou for your email, can you post the dimensions of your z-axis please, as I would like to build one like you have.

    With thanks

    jamie

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