[PCB_FORUM] Re: Changing cross section sequence
- From: "J Wages" <jwages@xxxxxxxxx>
- To: <icu-pcb-forum@xxxxxxxxxxxxx>
- Date: Sat, 14 May 2005 00:55:58 -0400
Good timing on this topic. I was just required to change a 2 layer board
to a 4 layer board and move the bottom layer etch to layer two. What
made it interesting is that now I was required to incorporate blind
laser drilled vias from lyr 1 to 2 and move the previous bottom layer
traces to the internal layer. It was a bit of a mind bender, but
interesting. Since the etch on the previous bottom layer was to be moved
to layer 2, I could not just rename the cross section layer. I ended up
just inserting two etch layers and two FR-4 layers between the top and
bottom layer and then just EDIT > CHANGE the trace etch from bottom to
LYR-2. That was pretty easy, but it just took a bit to manage all of the
previous vias and padstacks to conform to the 1 to 2, 4 to 3, and
thru-hole vias.... and just for laughs, the whole design was performed
using Micron units. For a guy that's been using Mils all his life...
*chuckle* T'was fun.
Jim S. Wages / SR. PCB Layout Designer:
Cary, NC - (919) 466-1596
-----Original Message-----
From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Kevin McCowan
Sent: Friday, May 13, 2005 8:09 AM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: Changing cross section sequence
Actually you can do it by just moving the "below"
layer to the new "above" layer and renaming
the layers. No need to move both layers.
If that isn't clear, make a new layer above
(or below) the layers to swap, move all of the
stuff (change or zcopy) from the farther
layer to the new layer and delete the original.
Rename and you are all happy again!
Kevin McCowan
Sr. PCB Designer
TSI Telsys
Andrew Noonan wrote:
> Hi Eugene,
> It's a kind of clunky way to do it, but;
> - add a new layer in the stackup (let's say directly under layer3)
> - change everything on layer 2 to the new layer
> - change everything on layer 3 to layer 2
> - delete layer 3
>
> Sometimes you need a sledgehammer to break a rock.
>
> Andrew
>
> -----Original Message-----
> From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
> [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Eugene Markle
> Sent: Thursday, May 12, 2005 2:41 PM
> To: icu-pcb-forum@xxxxxxxxxxxxx
> Subject: [PCB_FORUM] Changing cross section sequence
>
>
> Is there an easy way to change the order of layers on a board? For
> instance, I want to swap the order of layers 2 and 3 of a board. I can
> of course swap the names under the setup cross section utility but
that
> does not acrually swap the routing. Any help would be appreciated.
> Thanks in advance.
> Gene
>
>
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