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Questions relating to designing PCBs
By Philba
#36647
yes, I believe you are correct.
By jandirks
#36679
bigglez wrote:
(1) Type "show gnd" to highlight the existing gnd net
(2) Type "polygon gnd", then use the mouse to make a rectangle.
(3) Close the rectangle with a left mouse double-click.
(4) Type "ratsnest"

The rectangle should fill automatically.

(5) If not, type "redraw" or F2.

Comments Welcome!
Ok, I have followed the procedure as descibed in the quote. The only difference between my previous try and the last one is that I followed Philba's advice and drew a poly completely around my design. After hitting 'ratsnest', my board nicely filled up.

When saving the board and reopening it, the fill is completely removed. The outline is still there (like after drawing the poly), but the fill (like what you see when you hit 'ratsnest') is gone. Also, I submitted the board to BatchPCB and the designed passed the bot, but there was no difference to see between my first submitted design from a few weeks ago (with no ground pad for under the mlf32) and the changed design.

Should I see a difference? I think I should...

I can still use my old boards, there is a via under the mlf32 chip where I can slide through a very thin wire. It makes contact with the bottom-ground-pad of the mlf-32 if I solder it to the board, but it is not the solution I am looking for.

This must be possible, right?
User avatar
By bigglez
#36692
jandirks wrote: When saving the board and reopening it, the fill is completely removed. The outline is still there (like after drawing the poly), but the fill (like what you see when you hit 'ratsnest') is gone. Also, I submitted the board to BatchPCB and the designed passed the bot, but there was no difference to see between my first submitted design from a few weeks ago (with no ground pad for under the mlf32) and the changed design.

Should I see a difference? I think I should...
Greetings JD,

What are you viewing to make this claim? The composite
PNG images from BatchPCBshould be good enough to see
the newly added poly fill (ground plane). Many people also
use a third party Gerber viewer to see the actual files.
bigglez wrote: Polygon fills take a lot of CPU time so it better to turn off
the fill until you're ready for DRC. To remove the fill from
a poygon click the polygon's border using the "Ripup"
command.

Polygons are auto created when you run the CADCAM job.
So just to make it clear, the poly fills are turned off by
EAGLE when you load a board. You will need to turn
them on ("ratsnest") to see the fill each time.

However, the fill is automatically done when you run
a CAM job.
jandirks wrote:This must be possible, right?
Perhaps you can post your SCH and BRD files here?

Comments Welcome!
By jandirks
#36695
Is it ok if I mail them to you?
User avatar
By bigglez
#36709
jandirks wrote:Is it ok if I mail them to you?
JD,

Sure! I'll try to help you.
Send then to pstonard AT ix DOT netcom DOT com
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