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  1. #1
    Join Date
    Jan 2017
    Posts
    2

    Default Weirdest scaling problem with saving as DXF.

    Hi,

    I have one really frustrating problem with my Catia V5.
    This is hard to explain so I made a short video of it.
    https://www.youtube.com/watch?v=SXtsWoPzXKg
    Hopefully you get the idea from that.

    Problem is with scaling when I save a file as dxf and then open it again.
    Happens rarely (4 times out of ~200 files I have checked this week).
    Always simple shape causes problems. More complex shapes are saved normally.
    At the moment I have tried 3 hours to create a dxf-file that has only one 21,0 mm circle in it (no success).

    I have tried:
    1. Restart Catia
    2. Restart Computer
    3. Check different settings
    4. Delete AppData personal settings

    Same happens with DWG files too.

    Regards,
    Petri T

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  2. #2
    Join Date
    Jul 2006
    Posts
    1,736

    Default

    Comparing 21 to 533.4 equals 25.4, which indicates a problem with units. (21 inches = 533.4 mm)

    Check the Tools + Options and make sure the length units are set to mm, and verify the DXF units also (mine is set to Automatic). see both attachments

    units.JPG units dxf.JPG
    Last edited by MrCATIA; January 27th, 2017 at 10:16 AM.

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  3. #3
    Join Date
    Jul 2006
    Posts
    1,736

    Default

    If this only happens rarely, I would suspect the dxf files. Do they open okay with other software? Were they created differently?

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  4. #4
    Join Date
    Jan 2017
    Posts
    2

    Default

    Hi,

    And thanks for answers and suggestions. I will check those things later today.

    Indeed, this happens randomly with simple shapes. If I add more stuff into the file it saves it normally and opens it normally.
    I have checked those dxf-files with online dxf-viewer and there they appear in wrong scale there too. Every file is created same way and problem is only with simple shapes.

    ...
    I checked the options after every step when creating dxf file. Didn't notice any changes there during the process.
    After changing option under "dxf"-tab from automatic to mm (millimeters) saving did work correctly. I think the problem was there. Just weird that it is only with few files (few newly created and some older ones).

    Anyway. Now I know the way around the problem and I can continue my project. Thank you!

  5. #5
    Join Date
    Jul 2006
    Posts
    1,736

    Default

    One more thing to verify:

    Make sure the dimension units are correct. Use the NUM.DIMM dimension style for millimeter dimensions. Use the NUM.DINC style for inch. (or equivalents)
    Last edited by MrCATIA; February 1st, 2017 at 05:12 PM.

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