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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

  3. #3
    Neale's Avatar
    Lives in Plymouth, United Kingdom. Last Activity: 18 Hours Ago Has been a member for 4-5 years. Has a total post count of 788. Received thanks 109 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

  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
    If you will not be swayed by logic or experience simply pick the idea you
    like best, but ask yourself why you sought advice in the first place and,
    for a simple life, perhaps consider not doing so in future

  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

  10. #10
    Ger21's Avatar
    Lives in Detroit, United States. Last Activity: 5 Hours Ago Has been a member for 4-5 years. Has a total post count of 405. Received thanks 52 times, giving thanks to others 0 times. Referred 1 members to the community.
    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
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