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Arc not present and units issue

Discussion in 'CAM' started by darrepac, Apr 22, 2020.

  1. darrepac

    darrepac New
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    Hello

    I tried to open this file in CAM Openbuilds and I got the following issues:
    - the arc are not present (!)
    - units: my drawing units is centimeter but looking at the result it seems it considers it as mm, can it be changed somewhere?

    thanks
     

    Attached Files:

  2. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
    Staff Member Moderator Builder Resident Builder

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    Export as DXF R14 Polyline format.

    Yours is in DXF R2007 - line 10 of the file if you view it as Text (notepad) shows AC1021

    • AC1027 -- AutoCAD 2013-
    • AC1024 -- AutoCAD 2010-2012
    • AC1021 -- AutoCAD 2007-2009
    • AC1018 -- AutoCAD 2004-2006
    • AC1015 -- AutoCAD 2000-2003
    • AC1014 -- AutoCAD Release 14
    • AC1012 -- AutoCAD Release 13
    • AC1009 -- AutoCAD Releases 11 and 12
    • AC1006 -- AutoCAD Release 10
     
  3. darrepac

    darrepac New
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    ah ok, will check it. I used freecad and used normal export.
    The file is working ok in Fusion 360 and CAMBAM
     
  4. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Fusion is owned by Autodesk, so they have access to the original DXF APIs - so they can support all versions. We can only support DXF R14 reliably as thats the widely used spec in the Open Source DXF parser libraries.
    The DXF format is proprietary, not open, so the open source parsers were built by reverse engineering the data, and what limited documentation Autodesk released. The older the format, the better its understood

    We've extended it by adding some extra entities OpenBuilds/OpenBuilds-CAM - but best to still give it DXF R14 polylines.

    If you have Fusion, you'd not need OpenBuilds CAM anyway, use the built in CAM (superior to the beginner friendly, free, OpenBuilds CAM)
     
  5. darrepac

    darrepac New
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    ok, thanks for the explanation
    I am currently testing different software, way of making things
     
    Peter Van Der Walt likes this.

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