[PCB_FORUM] Re: Copper balancing "thieving dots"
- From: "Andrew Noonan" <andrew@xxxxxxxxxxx>
- To: <icu-pcb-forum@xxxxxxxxxxxxx>
- Date: Wed, 22 Sep 2004 09:21:21 -0700
There was a response previously that described this well for deleting
the shapes created by the skill auto-balance routine.
Apply FIXED property to * nets (all nets).
Delete, filter Shapes only, and select all.
The only caveat here is that if you do have other unconnected shapes on
your auto-balanced layer, they may also be deleted.
Andrew
-----Original Message-----
From: JACK KELLY [mailto:jack.kelly@xxxxxxxxxx]
Sent: Wednesday, September 22, 2004 9:20 AM
To: 'icu-pcb-forum@xxxxxxxxxxxxx'
Subject: [PCB_FORUM] Re: Copper balancing "thieving dots"
i have used the skill file several times for auto-balancing but have not
seen a way to automatically remove the thieving. how do you
automatically
remove it?
-----Original Message-----
From: george.h.patrick@xxxxxxxxxxxxxx
[mailto:george.h.patrick@xxxxxxxxxxxxxx]
Sent: Wednesday, September 22, 2004 11:10 AM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: Copper balancing "thieving dots"
There should be no reason to have the thieving on other than the top and
bottom, unless your board house is running some sequential lamination
stuff (i.e. buried vias and such).
I had done some work on the shareware balancing program originally
written by David Sheuring in 1984 to adapt it to some of the things we
do here, adding "thieving keepout" areas, and the ability to
automatically remove the thieving. It takes about 30 seconds to balance
a side on my current board using the skill routine, it's been 4 minutes
or more for the built-in Cadence routine and it's still not done. I
don't know what else it is checking for, but it certainly is
slooowwwwwwwwww...
I think I'll still use the skill routine :)
I think the original still on sourcelink, my version probably wouldn't
work outside Tektronix.
--
George Patrick
Tektronix, Inc.
Central Engineering, PCB Design Group
P.O. Box 500, M/S 39-512
Beaverton, OR 97077-0001
Phone: 503-627-5272 Fax: 503-627-5587
<http://www.tektronix.com/>
http://www.tektronix.com <http://www.pcb-designer.com/>
http://www.pcb-designer.com
It's my opinion, not Tektronix'
-----Original Message-----
From: Mark Salberg [mailto:msalberg@xxxxxxxxxxxx]
Sent: Wednesday, September 22, 2004 08:30
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: Copper balancing "thieving dots"
It looks like this will be a very useful utility. One more question: Can
anybody tell me if it is better to have copper balance pads aligned or
offet from layer to layer?
_
_
_ or _ _ _
_ _
_ _ _
Thanks for all your help!
Mark
Dennis Ward wrote:
What are you running? I don't have utilities under tools menu.
I'm in Allegro Designer 14.2
Dennis
-----Original Message-----
From: Uri Chaplianka [mailto:urich@xxxxxxxxxx]
Sent: Wednesday, September 22, 2004 10:49 AM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: Copper balancing "thieving dots"
Is there a list of all Allegro commands available?
Yes, Tools->Utilities->Keyboard Commands.
Uri
-----Original Message-----
From: Mark Salberg [mailto:msalberg@xxxxxxxxxxxx]
Sent: Wednesday, September 22, 2004 4:49 PM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: Copper balancing "thieving dots"
Uri,
Thanks a lot!
I could not find anything in Allegro Help.
It looks to be exactly what we were looking for.
Is there a list of all Allegro commands available?
There is an Automatic Copper Balance PDF on Source Link, but looks like
a skill file that would have to be loaded independently.
We will give your suggestion a try Uri.
Thanks again,
Mark
Uri Chaplianka wrote:
Hi Mark !
Just within Allegro type: "thieving".
Uri
-----Original Message-----
From: Mark Salberg [mailto:msalberg@xxxxxxxxxxxx]
Sent: Wednesday, September 22, 2004 4:20 PM
To: Cadence User Group
Subject: [PCB_FORUM] Copper balancing "thieving dots"
Does anybody know of an easy way to create (in Allegro) copper balance
thieving dots?
We are instructed to balance all boards in the database and not to give
fab free rein in their placement.
We are currently adding 100 mil shapes on 200 mil spacing...manually.
Thanks,
Mark
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