I like using split planes; using a poured internal plane is the same as an
external plane - every time you add or move holes, components, etc., you
have to repour the plane. Whereas a split plane doesn't have that problem;
as long as the via or pad is tied to the correct net, it stays connected, no
matter how much you move it. Also, I think a split plane makes for a smaller
file size & gerber plot.
Sean James
PCB Designer
Telecast Fiber Systems, Inc.
102 Grove Street
Worcester, MA 01605
(TEL) 508.754.4858 x33
(FAX) 413.541.6170

----- Original Message -----
From: "Michael Reagan" <[EMAIL PROTECTED]>
To: "Protel EDA Forum" <[EMAIL PROTECTED]>
Sent: Friday, December 14, 2001 1:33 PM
Subject: Re: [PEDA] Merging boards


> But other then that it works just fine. I most
> > heartedly suggest
> > that all design, checking and editing be absolutely complete before you
> > merge boards because after merging editing or DRC checking and other
> > operations can become very complex because of unrouted nets
> > between boards,
> > duplicate designators and the likes. Keep your original singular boards
to
> > work on for future editing, keep the merged boards as a separate
panelized
> > file, edit only the original singular boards when editing is required.
> > The problem with merging boards which contain differing or split
> > planes is very much more complex. Basically it probably shouldn't be
> > attempted unless you are quite experienced or the boards are absolutely
> > identical. For this very reason I usually use Mid-layers rather then
Plane
> > layers and I draw my planes as polygons. This is much more conducive to
> > merging multiple boards into a panel. It also gets you around some of
the
> > limitations/bugs associated with "Planes" not being DRC'ed
> > properly for all
> > possible errors.
> >
>
> Brad,
> I agree save your orig file after you run drcs, then  create a new file to
> panelize. So how difficult is it to toggle thru the plane layers, view
them
> and reconnect planes?  Not hard at all maybe two or three keystrokes.   I
> don't see it as a  problem.  Sure its not perfect but panelizing would be
> hard to implement to satisfy everyone's idea of how it should work
> especially when you expect drcs to work also.   The point is you can do it
> accurately, and it really isn't that much of a hassle. The other option is
> to use Camtastic, I never use pours on mid layers because most of the
board
> houses I have experience with, not only frown upon it, I had one refuse to
> fabricate the board because it compromised their lamination process.
>
> Mike Reagan
> EDSI
>
>
>

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