ShapeOko and GRBL shield microsteps

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  • June 29, 2012 at 8:56 am #1310
    Jan
    Member

    I noticed there is a modification of microsteps for Z axis. ( from 8 default to 2 microsteps). I also bought from you GRBL shield and I am not sure if I must also make such a modification or not. Can you please let me know?
    Thank you

    June 29, 2012 at 9:53 am #1311
    alden
    Member

    If you are running the Shapeoko I recommend making the Z axis mod. Here is a page describing the rationale and instructions. It’s quite simple and takes about 5 minutes. If you are running another CNC machine like a Zen Toolworks or a Probotix this is not necessary.
    http://www.synthetos.com/wiki/index.php?title=Z_Axis_Mod_for_Shapeoko

    June 29, 2012 at 1:27 pm #1312
    Jan
    Member

    Thanks Alden for the reply.
    But why is that modification needed for Shapeoko?

    June 29, 2012 at 2:56 pm #1313
    alden
    Member

    The reason is explained on the Shapeoko forum in this post:
    http://www.shapeoko.com/forum/viewtopic.php?f=4&t=221

    June 29, 2012 at 4:11 pm #1314
    Jan
    Member

    Alden,Thanks for the reply. You say I need not make the mod if running a different machine from ShapeOko. Is that problem with ShapeOko caused by the fact that ShapeOko uses both belts (X and Y axes ) and rod( for Z axis)?
    I would like to use GRBL shield with a CNC that uses thread rods for all 3 axes.
    Is there any rule how I can find out the mod is necessary?
    Thanks again for the explanation

    June 29, 2012 at 4:44 pm #1315
    alden
    Member

    Since you are running 3 threaded axes you do not need the Shapeoko mod. Sorry for the confusion.

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