Homebrew PCBs

>I find that when I open the board, the ground plane doesn't always 
>show up properly.

If done properly, the "copper pour" should never show until you hit 
ratsnest after opening the board (assuming the box "Ratsnest 
processes polygons" under miscellaneous settings is checked). Well, 
more correctly, it never shows in my case. I see only the polygon 
frame (basically a rectangle in its simplest form) around the board 
or area.

This is by design IMO since there is no command that I'm aware of to 
roll back the pour and allow for relevant changes to items that the 
pour may obscure once it's done/redone during an editing 
session....Correct me if there is.  In other words the pour itself, 
like everything else, is never "written in copper, bits or bytes", 
think of the board opening as a graphical regeneration process based 
on saved data with the pour regeneration step being held back until 
you hit ratsnest. Perhaps there is some option to have polygons 
automatically processed at board opening but I'm not aware of it. 
Also, things may have changed with later versions of Eagle.

For those new to this, here is a picture of a board with a poured 
ground plane. As others have stated, this is dead easy with Eagle;

http://www.pbase.com/eldata/image/57044297

--- In Homebrew_PCBs@yahoogroups.com, "Dave Hylands" <dhylands@...> 
wrote:
>