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EAGLE User Support (English) polygon fill issue
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Related

polygon fill issue

Former Member
Former Member over 14 years ago

I have a non orphant polygon fill arounnd some connectors, and because I

wanted very thin thermals on the connector pins, I made a hole in the main

polygon and added an overlapping different rank finer polygon around them

but with same netname. Now the main polygon doesnt fill in some areas around

this fine polygon, as it doesnt see the fine polygon as a contact inside the

polygon.

 

If this was hard to read, here is a short version:

Polygons doesn't count same-net different rank polygons overlapping it as a

contact.. It should.

 

See attached image. Pink is a copy of the polygons filled on red just to

illustrate how my polygons look.

The outer has rank 6, the inner has 1.

 

 

There is no need to suggest alternative solutions for this. This is just a

sample layout to induce the problem I have with a very large board and using

one huge fine wire fill is not an option (It already takes ages to fill).

Another alternative is to put a same net via in there, wich I probably have

to do for now.

 

 

 

 

begin 666 expected_fill.PNG

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+````245.1*Y"8((`

`

end

 

 

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  • Former Member
    Former Member over 14 years ago

    Morten Leikvoll wrote:

    I have a non orphant polygon fill arounnd some connectors, and

    because I wanted very thin thermals on the connector pins, I made a

    hole in the main polygon and added an overlapping different rank

    finer polygon around them but with same netname. Now the main polygon

    doesnt fill in some areas around this fine polygon, as it doesnt see

    the fine polygon as a contact inside the polygon.

     

    If this was hard to read, here is a short version:

    Polygons doesn't count same-net different rank polygons overlapping

    it as a contact.. It should.

     

    See attached image. Pink is a copy of the polygons filled on red just

    to illustrate how my polygons look.

    The outer has rank 6, the inner has 1.

     

    >

    There is no need to suggest alternative solutions for this. This is

    just a sample layout to induce the problem I have with a very large

    board and using one huge fine wire fill is not an option (It already

    takes ages to fill). Another alternative is to put a same net via in

    there, wich I probably have to do for now.

     

    Your point appears correct. I don't wish to diminish your

    suggestion/request.

     

    Now for an alternative solution that negates the need for a via.

    Create the large polygon with the hole as you have done.

    Overlay  the finer polygon (less width) making it larger than the hole

    Both ranks can be the same.

     

    Each polygon fills using its own rules.

    If the finer polygon is smaller than the hole then an unfilled area, similar

    to the orphaned area in your example, will occur.

     

     

    Regards

    Warren

     

     

     

     

     

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Reply
  • Former Member
    Former Member over 14 years ago

    Morten Leikvoll wrote:

    I have a non orphant polygon fill arounnd some connectors, and

    because I wanted very thin thermals on the connector pins, I made a

    hole in the main polygon and added an overlapping different rank

    finer polygon around them but with same netname. Now the main polygon

    doesnt fill in some areas around this fine polygon, as it doesnt see

    the fine polygon as a contact inside the polygon.

     

    If this was hard to read, here is a short version:

    Polygons doesn't count same-net different rank polygons overlapping

    it as a contact.. It should.

     

    See attached image. Pink is a copy of the polygons filled on red just

    to illustrate how my polygons look.

    The outer has rank 6, the inner has 1.

     

    >

    There is no need to suggest alternative solutions for this. This is

    just a sample layout to induce the problem I have with a very large

    board and using one huge fine wire fill is not an option (It already

    takes ages to fill). Another alternative is to put a same net via in

    there, wich I probably have to do for now.

     

    Your point appears correct. I don't wish to diminish your

    suggestion/request.

     

    Now for an alternative solution that negates the need for a via.

    Create the large polygon with the hole as you have done.

    Overlay  the finer polygon (less width) making it larger than the hole

    Both ranks can be the same.

     

    Each polygon fills using its own rules.

    If the finer polygon is smaller than the hole then an unfilled area, similar

    to the orphaned area in your example, will occur.

     

     

    Regards

    Warren

     

     

     

     

     

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Children
  • Former Member
    Former Member over 14 years ago in reply to Former Member

    "Warren Brayshaw" <warrenbrayshaw@paradise.net.nz> wrote in message

    news:iv5blk$46g$1@cheetah.cadsoft.de...

    Morten Leikvoll wrote:

    >> I have a non orphant polygon fill arounnd some connectors, and

    >> because I wanted very thin thermals on the connector pins, I made a

    >> hole in the main polygon and added an overlapping different rank

    >> finer polygon around them but with same netname. Now the main polygon

    >> doesnt fill in some areas around this fine polygon, as it doesnt see

    >> the fine polygon as a contact inside the polygon.

    >>

    >> If this was hard to read, here is a short version:

    >> Polygons doesn't count same-net different rank polygons overlapping

    >> it as a contact.. It should.

    >>

    >> See attached image. Pink is a copy of the polygons filled on red just

    >> to illustrate how my polygons look.

    >> The outer has rank 6, the inner has 1.

    >>

    >>

    >> There is no need to suggest alternative solutions for this. This is

    >> just a sample layout to induce the problem I have with a very large

    >> board and using one huge fine wire fill is not an option (It already

    >> takes ages to fill). Another alternative is to put a same net via in

    >> there, wich I probably have to do for now.

     

    Your point appears correct. I don't wish to diminish your

    suggestion/request.

     

    Now for an alternative solution that negates the need for a via.

    Create the large polygon with the hole as you have done.

    Overlay  the finer polygon (less width) making it larger than the hole

    Both ranks can be the same.

     

    This is not an option, cause I dont't know how large these holes are until

    first ratsnest. My board takes a VERY long time to ratsnest (my board is

    maybe world record size for eagle?...460x423mm, 16 layers) so these issues

    create a lot of manual work,tweaking and time consuming reruns of ratsnest.

     

    Each polygon fills using its own rules.

    If the finer polygon is smaller than the hole then an unfilled area,

    similar

    to the orphaned area in your example, will occur.

     

    This is not relevant to the problem?

     

     

     

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