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  1. #1
    Technician
    Join Date
    Nov 2014
    Location
    New Orleans
    Posts
    50

    Did they remove Z_RAISE before homing?

    I am using RC Bugfix from 31 May 2016, and one feature I don't see anymore is the "z raise before homing" setting. There is still a z raise before probing for ABL, but oftentimes if I am checking my nozzle/bed clearance, and then home the machine my z probe will crash into the bed if I forget to raise Z before running an autohome command. Can I just add these two lines back into the newer code (RC6 I believe)?

    #define Z_RAISE_BEFORE_HOMING 12 // (in mm) Raise Z axis before homing (G28) for Z probe clearance.
    // Be sure you have this distance over your Z_MAX_POS in case.

  2. #2
    Super Moderator Roxy's Avatar
    Join Date
    Apr 2014
    Location
    Lone Star State
    Posts
    2,117
    The Z_RAISE_BEFORE_HOMING is gone... But you shouldn't need it. The probing is smarter. Just make sure you have a good number in the

    #define Z_RAISE_BEFORE_PROBING

  3. #3
    Student
    Join Date
    Jul 2014
    Location
    Van Nuys, CA
    Posts
    21
    They changed the Z_RAISE_BEFORE_PROBING to something a little different, at least in 1.1.0-RC6. It is now here:

    Code:
    // @section homing
    #define MIN_Z_HEIGHT_FOR_HOMING 6   // (in mm) Minimal z height before homing (G28) for Z clearance above the bed, clamps, ...
                                        // Be sure you have this distance over your Z_MAX_POS in case.
    This will essentially accomplish the same thing as the old define.

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