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carve overlapping midway through the program HELP

Discussion in 'CNC Mills/Routers' started by shane doyle, Sep 12, 2024.

  1. shane doyle

    Builder

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    hey everyone, im shane, new to openbuilds but not cnc work in general. ive got a new lead 1515, im not going to say its been great because it has not but thats for another time.

    im trying to do a relatively simple job carving a small sign for someone. for some reason the machine is getting about half way through the code annd then without stopping it seems like its resetting the zero and starts cutting on top of the already cut material. another odd thing ive noticed is the 3d view on OBcontrol is only showing a section thats 9x13. any other program ive run has the full 46x46 like it does in vetric.
    ive run the simulation in vetric and OBcontrol. used the check size function, which says its right. no issues anywhere until i run it. about to do it again and watch it so i can stop it and post the code. for now these are the pictures. 20240912_160752.jpg 20240912_162802.jpg

    EDIT

    heres the code. i stopped it as soon as it messed up. now its doing it at random times. is it possible the controller is momentarily losing connection from EMI put out by the spindle VFD?

    [17:43:47] [ G1X123.779Y103.932 ] ok

    [17:43:47] [ G1X123.327Y103.171 ] ok

    [17:43:47] [ G1X123.773Y103.464 ] ok

    [17:43:47] [ G1X124.468Y103.961 ] ok

    [17:43:47] [ G1X125.124Y104.468 ] ok

    [17:43:47] [ G1X125.710Y104.963 ] ok

    [17:43:48] [ G1X126.195Y105.415 ] ok

    [17:43:48] [ G1X126.575Y105.819 ] ok

    [17:43:48] [ G1X127.009Y106.340 ] ok

    [17:43:48] [ G1X127.451Y106.907 ] ok

    [17:43:48] [ G1X127.879Y107.494 ] ok

    [17:43:48] [ G1X128.293Y108.101 ] ok

    [17:43:48] [ G1X128.692Y108.728 ] ok

    [17:43:48] [ G1X129.077Y109.375 ] ok

    [17:43:48] [ G1X129.448Y110.043 ] ok

    [17:43:48] [ G1X129.803Y110.730 ] ok

    [17:43:48] [ G1X130.143Y111.438 ] ok

    [17:43:48] [ G1X130.468Y112.166 ] ok

    [17:43:48] [ G1X130.778Y112.915 ] ok

    [17:43:48] [ G1X131.072Y113.683 ] ok

    [17:43:48] [ G1X131.351Y114.472 ] ok

    [17:43:48] [ G1X131.613Y115.280 ] ok

    [17:43:48] [ G1X131.860Y116.109 ] ok

    [17:43:48] [ G1X132.375Y117.990 ] ok

    [17:43:48] [ G1X132.680Y118.951 ] ok

    [17:43:48] [ G1X133.006Y119.844 ] ok

    [17:43:48] [ G1X133.358Y120.671 ] ok

    [17:43:48] [ G1X133.747Y121.439 ] ok

    [17:43:48] [ G1X133.959Y121.782 ] ok

    [17:43:48] [ G1X133.512Y122.279 ] ok

    [17:43:49] [ G1X133.234Y122.722 ] ok

    [17:43:49] [ G0Z5.080 ] ok

    [17:43:49] [ G0X103.876Y142.543 ] ok

    [17:43:49] [ G1Z-3.810F508.0 ] ok

    [17:43:49] [ G1X103.397Y142.812F1270.0 ] ok

    [17:43:49] [ G1X102.841Y142.703 ] ok

    [17:43:49] [ G1Y123.672 ] ok

    [17:43:49] [ G2X102.487Y121.881I-4.714J0.000 ] ok

    [17:43:49] [ G2X102.869Y119.938I-4.332J-1.860 ] ok

    [17:43:49] [ G1X102.568Y102.743 ] ok

    [17:43:49] [ G1X103.851 ] ok

    [17:43:49] [ G1Y119.970 ] ok

    [17:43:49] [ G2X104.204Y121.758I4.714J0.000 ] ok

    [17:43:50] [ G2X103.851Y123.546I4.362J1.788 ] ok

    [17:43:50] [ G1Y142.064 ] ok

    [17:43:50] [ G1X103.876Y142.543 ] ok

    [17:43:50] [ G1X104.511Y143.628 ] ok

    [17:43:50] [ G1X103.564Y144.145 ] ok

    [17:43:50] [ G1X102.939Y143.996 ] ok

    [17:43:50] [ G1X102.319Y143.888 ] ok

    [17:43:50] [ G1X101.583Y143.793 ] ok

    [17:43:50] [ G1Y123.672 ] ok

    [17:43:50] [ G2X101.077Y121.870I-3.457J0.000 ] ok

    [17:43:51] [ G2X101.612Y119.960I-2.921J-1.849 ] ok

    [17:43:51] [ G1X101.278Y101.485 ] ok

    [17:43:51] [ G1X105.201 ] ok

    [17:43:51] [ G1X105.109Y102.281 ] ok

    [17:43:51] [ G1Y119.970 ] ok

    [17:43:51] [ G2X105.607Y121.758I3.457J0.000 ] ok

    [17:43:51] [ G2X105.109Y123.546I2.959J1.788 ] ok

    [17:43:51] [ G1Y142.064 ] ok

    [17:43:51] [ G2X105.320Y143.254I3.457J0.000 ] ok

    [17:43:51] [ G1X104.511Y143.628 ] ok

    [17:43:51] [ G1X105.091Y144.744 ] ok

    [17:43:52] [ G1X104.221Y145.228 ] ok

    [17:43:52] [ G1X103.772Y145.413 ] ok

    [17:43:52] [ G1X103.551Y145.465 ] ok

    [17:43:52] [ G1X103.228Y145.354 ] ok

    [17:43:52] [ G1X102.689Y145.229 ] ok

    [17:43:52] [ G1X102.128Y145.131 ] ok

    [17:43:52] [ G1X100.877Y144.984 ] ok

    [17:43:52] [ G1X100.326Y144.941 ] ok

    [17:43:52] [ G1Y123.672 ] ok

    [17:43:54] [ G2X99.368Y121.856I-2.200J0.000 ] ok
     

    Attached Files:

    #1 shane doyle, Sep 12, 2024
    Last edited: Sep 12, 2024
  2. shane doyle

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    now it stopped in a different spot and when i tried to go to zero it is off by about .75"
    i just read something about if the model quality is set too high in vetric the controller goes nuts?
     

    Attached Files:

  3. David the swarfer

    David the swarfer OpenBuilds Team
    Staff Member Moderator Builder Resident Builder

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    your X axis is losing steps, most likely during a rapid move.
    1. check for anything loose, grub screws in the couplers etc. make sure one of the screws is on the flat of the motor shaft.
    2. check the GRBL settings for maxrate and acceleration, assuming you loaded a machine profile according to the build instructions, did you set either setting higher at any point? if so, they are too high. the profiles are conservative, it should work just fine with a stock profile, if a little slow.
    3. check the carriage wheels for dirt, dirt under a wheel causes a large and instantaneous increase in resistance to movement, exactly what causes a stepper motor to miss steps
    4. check the cabling for anything that might snag during movement
    5. check the current adjustment, the Blackbox is shipped with them set to halfway which is normal for the Lead motors, if you changed anything then maybe it is now too low.
     
    Peter Van Der Walt likes this.
  4. shane doyle

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    The issue only happens on the vcarve operation. Running normal pocket or profile operations everything runs great.
     
  5. shane doyle

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    no i havent changed them 3500, 3500, 1000. and 350, 350, 350
     

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