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Where can I find a free back plotter to verify NC code?

Daniel Lyon

I'm looking for a basic G code back plotter that will allow me to see what the code looks like based off actual G code and not the simulation. Where can I find one?

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    Daniel Lyon

    Here is one option that I've found to verify G code. It's pretty basic but its free and shows you stepping through the code. As you step through the code you can see a visual representation on your screen and able to see the line of code that it corresponds to. Great for troubleshooting actual G code from text files rather than the simulated toolpath thats in CAMWorks. If the link dies the installation setup file is attached.

    http://nc-corrector.inf.ua/Downloads/NC4_setup.exe

    https://hawkridgesystems.zendesk.com/attachments/token/7yhje7ke1lglinq/?name=NC4_setup.exe

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    Daniel Lyon

    If you are verifying toolpath using this and get strange results where arcs or circles show completely different from what they should be it's likely related to the Absolute G90 mode. To have the plotter plot correctly you may have to change the machine setting in Options>Setup>Machine>Arc. If using G90 set it to Absolute Arc Center, reopen the text file and your results should be correct. More information can be found here http://www.cnccookbook.com/CCCNCGCodeArcsG02G03.htm

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    Daniel Lyon

    Just found an awesome double verification side to this. Once you open the NC file in here you can save the line code as a DXF file. Open the DXF file in SolidWorks and set it to import 3D curves or model. Insert both into an assembly and align the origins (NC origins not solidworks) and there you go...back plotted toolpath laid out over the Solidworks model. I did note there is an option to get it to export to SolidWorks but I couldn't get this to work.

    The one below shows the original toolpath in the red dotted lines with the imported curves above in blue...clearly something is wrong with the height and the alignment is off at the far right side.

    Backplotting_in_SolidWorks.png