Actions
Forum Thread Details
  • Replies 9 replies
  • Subscribers 178 subscribers
  • Views 1800 views
  • Users 0 members are here
Related

Changing normal vias to b lind or burred vias

autodeskguest

I'm developing my first 4-layer board in v4.16.  My plan is to prototype it

with Osh Park before doing a pilot run with the final vendor.  For

aesthetic reasons (this is for a piece of functional sculpture), I'd like

the final version to use blind and, possibly, buried vias (so one side of

the PCB will be "unblemished"), but Osh only supports normal ones that go

all the way through.  It's not clear to me from the Eagle docs

 

1.  How to specify which type of via is created when routing on an internal

layer, or

 

2.  How to change a normal via to a blind or buried one later. 

 

Any tips on either or both of these issues appreciated.  I'm wondering how

big a chore it's going to be to go back and change all the normal vias for

the production version.

 

Thanks.

--

Web access to CadSoft support forums at www.eaglecentral.ca.  Where the CadSoft EAGLE community meets.

 

Parents

  • On 23/09/2016 11:04 a.m., Karl Lautman wrote:

    I'm developing my first 4-layer board in v4.16.  My plan is to prototype it

    with Osh Park before doing a pilot run with the final vendor.  For

    aesthetic reasons (this is for a piece of functional sculpture), I'd like

    the final version to use blind and, possibly, buried vias (so one side of

    the PCB will be "unblemished"), but Osh only supports normal ones that go

    all the way through.  It's not clear to me from the Eagle docs

     

    1.  How to specify which type of via is created when routing on an internal

    layer, or

     

    2.  How to change a normal via to a blind or buried one later.

     

    Any tips on either or both of these issues appreciated.  I'm wondering how

    big a chore it's going to be to go back and change all the normal vias for

    the production version.

     

    Thanks.

     

     

     

    Hi

    You may not need to do much with the design.

     

    Your prototype is a two sided core. If the board house attaches another

    core to it with pre-preg, hey presto, you have what you need. In this

    stack-up you are using layers 1 and 2 and nothing on 15 and 16.

     

    So you only need to change all vias to a depth of 1-2

     

    HTH

    Warren

     

     

     

  • in reply to autodeskguest

    On second thought, I don't think that will work, Warren.  There actually

    ARE some vias (pads, actually) that I need to go all the way through, it's

    just that they'll be covered by some components (display modules) that

    connect to them on the "unblemished" side so you won't see them.  This side

    has these modules and nothing else.  Forgot about that. 

    --

    Web access to CadSoft support forums at www.eaglecentral.ca.  Where the CadSoft EAGLE community meets.

     

Reply
  • in reply to autodeskguest

    On second thought, I don't think that will work, Warren.  There actually

    ARE some vias (pads, actually) that I need to go all the way through, it's

    just that they'll be covered by some components (display modules) that

    connect to them on the "unblemished" side so you won't see them.  This side

    has these modules and nothing else.  Forgot about that. 

    --

    Web access to CadSoft support forums at www.eaglecentral.ca.  Where the CadSoft EAGLE community meets.

     

Children
  • in reply to autodeskguest

    On 24/09/2016 8:28 a.m., Karl Lautman wrote:

    On second thought, I don't think that will work, Warren.  There actually

    ARE some vias (pads, actually) that I need to go all the way through, it's

    just that they'll be covered by some components (display modules) that

    connect to them on the "unblemished" side so you won't see them.  This side

    has these modules and nothing else.  Forgot about that.

     

     

    As always

    You will only receive applicable suggestions if the OP takes the time to

    provides accurate descriptions in the first instance.

     

    Good Luck

    Warren