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Board Geometry OUTLINE subclass warning

jmadsenee

Hi,

I have always used the Board Geometry OUTLINE subclass for my board outlines.  My board house wants a 1 mil trace on one of the layers as the board outline, so I've been using that subclass and including BOARD GEOMETRY/OUTLINE Gerber Film Record in the Artwork Control Form.  Since upgrading to 17.2, I am getting the warning: "WARNING(SPMHA2-118): Board Geometry subclasses, DESIGN_OUTLINE and CUTOUT are the preferred subclasses for defining a board outline..."  DESIGN_OUTLINE won't let me define a line width, and so doesn't really help me. 


What is the reason for this warning?  Can I just ignore it?


Thanks!

John

  • melview1
    in reply to Dale Peterson

    Thanks Dale.  As you say, I have discovered that lines are not allowed on DESIGN_OUTLINE.  I actually just ran into an issue where because of the suppression of 0 width lines, my board outline on the new DESIGN_OUTLINE did not get generated.  The PCB house was a little confused.  I just don't understand how DESIGN_OUTLINE can be the preferred subclass by PCB Designer for outlines when it has these limitations and causes unfixable gerber warnings.

    I guess my process will have to be:

    - Copy shape from DESIGN_OUTLINE to OUTLINE

    - Decompose shape to lines

    - Change Line Width to 0.001"

    - Use the subclass OUTLINE in my gerbers

  • Dale Peterson
    in reply to melview1

    There are a few settings under user preference/manufacturing/artwork.  One will catch zero line widths prior artwork generation. But better yet. In the artwork generation menu / film control/ Undefined line width you can set it auto change zero line width to a line width of your choosing. I do designs in mm. So, I've set mine to .1. That's all you have to do.

  • melview1
    in reply to Dale Peterson

    I'd rather not blindly apply a blanket rule to all zero width lines.  That will cover up mistakes for items that are inadvertently set to zero width.  I'd prefer the zero width items to be identified and fix them in the design.

  • Quarkdog1
    in reply to melview1

    During development mechanical designers change outline every 2nd day.  This is a pain.

    This also causes a function key issue, as now the "outline" shows up instead of the "Design Outline".  So i have to do the above or I see the old design

    funckey ~1 'settoggle lay lay_top lay_top_nil; $lay'

  • melview1
    in reply to Quarkdog1

    Agreed.  MEs are very liberal with their changes.  This is still a major PITA.

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