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Autodesk EAGLE
EAGLE User Support (English) Doubling up tracks on different layers
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Related

Doubling up tracks on different layers

autodeskguest
autodeskguest over 15 years ago

Guys,

 

I've got a problem I hope someone can help me out with.  I have some

very high current traces on my PCB (15A and 30A).  I'm using 2oz copper

but in order to get track widths that aren't completely ridiculous I

need to double up the tracks on two layers.  I'm new at Eagle (last used

OrCAD PCB editor which is a stripped down version of Allegro) and I

can't seem to make this happen.  When I route the initial track on the

first layer naturally the ratsnest for this route disappears (since it

is now connected).  Eagle won't allow me to start a track on the second

layer because there is no longer an active ratsnest.  How do I get

around this?

 

This is also a generic issue.  If I want to start routing on a pin that

the ratsnest currently isn't touching (but it is unrouted, the ratsnest

is just terminated on a different unrouted pin) Eagle won't let me.

This is different from Allegro where I could start routing on any pin

and if it was unrouted the ratsnest would immediately snap to that pin.

  This is somewhat annoying since it is forcing me to route nets in the

order that Eagle decides to snap the ratsnest to instead of routing in

the order that is most logical to me.  I'm sure there is a way around

this, but I've yet to find it.

 

Thanks,

 

Michael

 

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  • autodeskguest
    autodeskguest over 15 years ago

    If you hold CTRL while selecting where to start routing then you can start

    at any point.

     

     

    "Michael Sansom" <mssansom@hotmail.com> wrote in message

    news:hp2ds9$rm0$1@cheetah.cadsoft.de...

    Guys,

     

    I've got a problem I hope someone can help me out with.  I have some very

    high current traces on my PCB (15A and 30A).  I'm using 2oz copper but in

    order to get track widths that aren't completely ridiculous I need to

    double up the tracks on two layers.  I'm new at Eagle (last used OrCAD PCB

    editor which is a stripped down version of Allegro) and I can't seem to

    make this happen.  When I route the initial track on the first layer

    naturally the ratsnest for this route disappears (since it is now

    connected).  Eagle won't allow me to start a track on the second layer

    because there is no longer an active ratsnest.  How do I get around this?

     

    This is also a generic issue.  If I want to start routing on a pin that

    the ratsnest currently isn't touching (but it is unrouted, the ratsnest is

    just terminated on a different unrouted pin) Eagle won't let me. This is

    different from Allegro where I could start routing on any pin and if it

    was unrouted the ratsnest would immediately snap to that pin. This is

    somewhat annoying since it is forcing me to route nets in the order that

    Eagle decides to snap the ratsnest to instead of routing in the order that

    is most logical to me.  I'm sure there is a way around this, but I've yet

    to find it.

     

    Thanks,

     

    Michael

     

     

     

    • Cancel
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Reply
  • autodeskguest
    autodeskguest over 15 years ago

    If you hold CTRL while selecting where to start routing then you can start

    at any point.

     

     

    "Michael Sansom" <mssansom@hotmail.com> wrote in message

    news:hp2ds9$rm0$1@cheetah.cadsoft.de...

    Guys,

     

    I've got a problem I hope someone can help me out with.  I have some very

    high current traces on my PCB (15A and 30A).  I'm using 2oz copper but in

    order to get track widths that aren't completely ridiculous I need to

    double up the tracks on two layers.  I'm new at Eagle (last used OrCAD PCB

    editor which is a stripped down version of Allegro) and I can't seem to

    make this happen.  When I route the initial track on the first layer

    naturally the ratsnest for this route disappears (since it is now

    connected).  Eagle won't allow me to start a track on the second layer

    because there is no longer an active ratsnest.  How do I get around this?

     

    This is also a generic issue.  If I want to start routing on a pin that

    the ratsnest currently isn't touching (but it is unrouted, the ratsnest is

    just terminated on a different unrouted pin) Eagle won't let me. This is

    different from Allegro where I could start routing on any pin and if it

    was unrouted the ratsnest would immediately snap to that pin. This is

    somewhat annoying since it is forcing me to route nets in the order that

    Eagle decides to snap the ratsnest to instead of routing in the order that

    is most logical to me.  I'm sure there is a way around this, but I've yet

    to find it.

     

    Thanks,

     

    Michael

     

     

     

    • Cancel
    • Vote Up 0 Vote Down
    • Sign in to reply
    • Cancel
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