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OpenBuilds CAM traveling through material without going to safe z

Discussion in 'CAM' started by Ernesto P, Nov 27, 2021.

  1. Ernesto P

    Ernesto P New
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    Hello, I need help with creating a path with OpenBuild CAM. I have an SVG file that I'm using and the software is moving through the material without going up on Z first. You can see how it creates new lines on the toolpath that were not there on the SVG file. I've tried with multiple types of cuts and I keep getting the same result. SVG file is attached. Appreciate any help with this issue.
     

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  2. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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  3. Ernesto P

    Ernesto P New
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    got it, will give it a try. I am using my plasma cutter as a big pen plotter but without the servo for lifting, I needed the Z-axis stepper to go up. Thanks for the quick response!!
     
  4. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Ok, you can plot that file, but you do need the Servo to lift to pen :)
     
  5. Ernesto P

    Ernesto P New
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    yeah, I know it's the default option but seems redundant to me to add a servo if there is already a Z-axis. I'm trying these artsy vectors now but the idea is to draw the bending lines with a sharpie and then cut with the plasma cutter. I guess lines will be also open vectors and I will have the same issue.
     
  6. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Yiu can use the Cnc toolpaths that has Z. Play around... Bend lines are at least straight lines, not a grid pattern like your SVG
     
  7. Ernesto P

    Ernesto P New
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    It will be great if you can modify the M command for the servo PWM to use another command like G0 and a Z pos instead. I will try doing it by hand on a text editor but looks like a simple change to implement and it might open the door to other CNC configurations.
     

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  8. Ernesto P

    Ernesto P New
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    nah, it wouldn't help in this case. Plotter mode with no-offset still doesn't like the open vector and does not lift the pen, traveling on top of the surface between areas.
     

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  9. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Really not the intended use case for the software at the end of the day
     
  10. Ernesto P

    Ernesto P New
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    yeah, I know, got it working with the Inkscape gcode generator. Thanks for the help and quick response, especially on a Saturday!
     

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    Peter Van Der Walt likes this.

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