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  1. #1
    Been learning Aspire for some CAM work, it seems to have a bug with simple circles where it generates G-Code with hundreds of straight lines?

    Here is a simple test file - it contains two paths, first is a square with 10mm radiused corners which works perfectly. The second is a simple circle and as you can see it has used loads of straight lines this time.

    Profile 2.tap.zip

    Can this be fixed at all, I am using the post for Mach3 with Arcs and ATC.

    Thanks

  2. #2
    Dave can you post the Aspire file up?

    I have just drawn a simple circle in Aspire and put it through the MAch3 post without any problems.

    Have you done the cad in Aspire or imported from another cad package there is a command to close vectors with a smooth curve
    Last edited by Clive S; 09-07-2016 at 09:59 PM.
    ..Clive
    The more you know, The better you know, How little you know

  3. #3
    Neale's Avatar
    Lives in Plymouth, United Kingdom. Last Activity: 3 Hours Ago Has been a member for 4-5 years. Has a total post count of 913. Received thanks 147 times, giving thanks to others 5 times.
    Daft question, maybe, but did you draw the circle in Aspire or import a dxf from elsewhere? I had similar problems a little while ago because I had saved the dxf in the wrong version so it ended up as a series of line segments rather than arcs.

  4. #4
    Hi

    the file was just a quick mess about for testing the motion on my mill conversion project.

    It was all done inside Aspire.

    File attached

    Test junk.zip

  5. #5
    I just made a similar file in my CAD app and converted it in Aspire and its just as bad, converted in SheetCam and its perfect - about 15 lines of code :)

    Seems to be an aspire bug?

  6. #6
    Quote Originally Posted by Davek0974 View Post
    I just made a similar file in my CAD app and converted it in Aspire and its just as bad, converted in SheetCam and its perfect - about 15 lines of code :)

    Seems to be an aspire bug?
    Dave when I draw a circle in my Aspire it is fine when I did another circle on your drawing it is also fine. Did you draw the circle in Aspire
    The post I am using is Mach2_3_Arcs_mm.pp
    Last edited by Clive S; 10-07-2016 at 08:49 AM.
    ..Clive
    The more you know, The better you know, How little you know

  7. #7
    Yes i drew it in aspire, same post here although i tweaked it a little to suit my machine but only in the end code i think.

    Aspire does the same thing when i import a circle from my CAD app.

  8. #8
    I'm not familiar with Aspire but most CAM applications have an option for lines or arcs as some old controllers don't support arcs.
    If you select a "lines, not arcs" output option in CAM the results are as described,

    - Nick
    Life is a learning and growing experience.

  9. #9
    Quote Originally Posted by Davek0974 View Post
    Yes i drew it in aspire, same post here although i tweaked it a little to suit my machine but only in the end code i think.

    Aspire does the same thing when i import a circle from my CAD app.
    On reading further. I have read that if you stretch a circle in Aspire it changes to segmented lines.
    ..Clive
    The more you know, The better you know, How little you know

  10. #10
    You must have modified the circle in some way.

    If I export g-code for your circle, it uses G1 segment.
    If I draw a new circle over the top of your, and export g-code, I get G2/G3 moves.
    Gerry
    ______________________________________________
    UCCNC 2017 Screenset

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    JointCAM - CAM for Woodworking Joints

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