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  1. #1
    Join Date
    Sep 2011
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    0

    Cutting speed VS traverse speed??

    Hello,

    I have been tweaking my first CNC build and use of Mach3, so far it works...
    But If I need to set the cutting speed way down low/slow for cutting something hard it also then moves relay slow when traversing from point to point (when Z is up)...

    Is there a way in Mach3 to set cutting/working speed -vs- a separate speed for non cutting/traversing speed?

    Thanks for the help.
    Shane

  2. #2
    Join Date
    Sep 2011
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    0
    I don't pay hundreds of dollars a year to be a member of CNCzone.com to post a ??? and get no reply :banana: ... Anyone?

    looking for help?
    Shane

  3. #3
    Join Date
    Dec 2003
    Posts
    24221
    G01 and G00 (rapid) Maybe??
    Remember G00 is non-interpolating!
    Al.
    CNC, Mechatronics Integration and Custom Machine Design

    “Logic will get you from A to B. Imagination will take you everywhere.”
    Albert E.

  4. #4
    Join Date
    Dec 2003
    Posts
    24221
    I wonder if that cured the problem..............?:tired:
    Al.
    CNC, Mechatronics Integration and Custom Machine Design

    “Logic will get you from A to B. Imagination will take you everywhere.”
    Albert E.

  5. #5
    Join Date
    Mar 2003
    Posts
    35538
    Cutting speed is set in your g-code with the F word. Rapid speed is the Velocity setting in the motor tuning screen.
    You can use Feedrate Override to adjust the speed set with the F word without changing the rapid speed.
    Gerry

    UCCNC 2017 Screenset
    http://www.thecncwoodworker.com/2017.html

    Mach3 2010 Screenset
    http://www.thecncwoodworker.com/2010.html

    JointCAM - CNC Dovetails & Box Joints
    http://www.g-forcecnc.com/jointcam.html

    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)

  6. #6
    Join Date
    Sep 2011
    Posts
    0
    Thanks for the help... good to know I may need to do it in Gcode but will try the Mach settings as well... will report back my findings.

    Shane

  7. #7
    Join Date
    Jul 2005
    Posts
    12177
    Quote Originally Posted by sweddle View Post
    I don't pay hundreds of dollars a year to be a member of CNCzone.com to post a ??? and get no reply :banana: ... Anyone?

    looking for help?
    Shane
    Are you serious or joking?
    An open mind is a virtue...so long as all the common sense has not leaked out.

  8. #8
    Join Date
    Jan 2005
    Posts
    1943
    If you are not setting the cutting feedrate in your g-code then how are you doing it? That is what the F word is for!! For example

    G0 X0

    is a rapid traverse move as fast as the machine can go

    G1 X0 F5

    is a feedrate move at F=5 inches per minute.

    The ONLY time I could think of where you would run into a problem like you are describing is if you are using the jog buttons for cutting. If that is the case then I would suggest using MDI instead.

  9. #9
    Join Date
    Dec 2003
    Posts
    24221
    Quote Originally Posted by Al_The_Man View Post
    G01 and G00 (rapid) Maybe??
    Remember G00 is non-interpolating!
    Al.
    One other thing to keep in mind that these codes are 'modal' you only have to enter them once, one cancels the other.
    You may find that some post processors add them at every line that has a move as well as the F value, this is really unnecessary.
    You only need to enter them once.
    Al.
    CNC, Mechatronics Integration and Custom Machine Design

    “Logic will get you from A to B. Imagination will take you everywhere.”
    Albert E.

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