[PCB_FORUM] Re: Copper balancing "thieving dots"
- From: JACK KELLY <jack.kelly@xxxxxxxxxx>
- To: "'icu-pcb-forum@xxxxxxxxxxxxx'" <icu-pcb-forum@xxxxxxxxxxxxx>
- Date: Wed, 22 Sep 2004 11:36:42 -0500
i wish some skill guru would tweak the code a little to simplify the removal
of copper shapes
-----Original Message-----
From: george.h.patrick@xxxxxxxxxxxxxx
[mailto:george.h.patrick@xxxxxxxxxxxxxx]
Sent: Wednesday, September 22, 2004 11:24 AM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: Copper balancing "thieving dots"
Put some code in to add a property to all the shapes, and more code to
delete any shape on a specified layer if it has that property.
--
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: JACK KELLY [mailto:jack.kelly@xxxxxxxxxx]
Sent: Wednesday, September 22, 2004 09:20
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 <mailto:urich@xxxxxxxxxx> ]
Sent: Wednesday, September 22, 2004 10:49 AM
To: icu-pcb-forum@xxxxxxxxxxxxx <mailto: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
<mailto:msalberg@xxxxxxxxxxxx> ]
Sent: Wednesday, September 22, 2004 4:49 PM
To: icu-pcb-forum@xxxxxxxxxxxxx <mailto: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
<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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