Need Help! Profiles off center on Cnc plasma


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Thread: Profiles off center on Cnc plasma

  1. #1
    Activation process Bradnicent's Avatar
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    Default Profiles off center on Cnc plasma

    Hi All on my home made Cnc plasma I have a part with multiple holes and they are not in the correct places ..... what could be the problem? .... it’s like it shifted to the side, my steps per is correct.. I’m using mach3 and sheetcam, what’s strange is when I have this specific part cut it causes this problem, I was told I am loosing steps on nema 23 stepper motors or emi , but emi only effects the system before the torch fires and if I’m loosing steps how is this happening? ... iv attachet pix of the drawing and part, if you look closely it looks like the center geometry has shifted to the right.

    Thanx
    Bradley



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    What happens if you re-run the program over the same spot? Does the pattern shift each time, or follow the same path?



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    Activation process Bradnicent's Avatar
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    Default Re: Profiles off center on Cnc plasma

    When I do a dry run it’s spot on


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    Default Re: Profiles off center on Cnc plasma

    I had a similar problem several years ago after the motherboard on my computer was replaced. As long as the torch was off the pattern was correct. As soon as I fired up the torch the table would lose position at various times. I went back to the manufacturer and asked for their advice on which motherboard I should be using. They sent me a different motherboard and the problem immediately went away. Some computer systems and components have trouble with the electrical noise that a plasma cutter puts off.



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    Activation process Bradnicent's Avatar
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    Default Re: Profiles off center on Cnc plasma

    Hi plasmamett, I’m using a very old mother board and running Windows xp ... are u say I should use a later mother board?.... what mother board are u using?


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    Default Re: Profiles off center on Cnc plasma

    The replacement motherboard that WinCNC sent me is made by ASRock. I don't recall the exact model. I am using Windows 7 on this particular computer. WinCNC indicated that ASRock motherboards are more tolerant to the electrical noise issues.



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    Default Re: Profiles off center on Cnc plasma

    Is this the mother board you are referring to?

    https://www.makro.co.za/makstorefron...iABEgIaKPD_BwE


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    Default Re: Profiles off center on Cnc plasma

    That is the correct brand but I'm not sure which model I have. It is going to be slightly different for your computer because you are running Windows XP. I'm at home right now and my plasma table is at work. I check on Monday and see which model I have.



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    Default Re: Profiles off center on Cnc plasma

    Thanx a mill plasma Profiles off center on Cnc plasma


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    Default Re: Profiles off center on Cnc plasma

    Hi plasmamatt just a reminder to have a look at the model of your asrock motherboard and let me knw

    Bradley


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    Default Re: Profiles off center on Cnc plasma

    Sorry Bradley,

    I forgot all about it. I will make a note to check on this tomorrow.



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    Default Re: Profiles off center on Cnc plasma

    No problem thanks


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Profiles off center on Cnc plasma

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