Hi Blake, Thanks for the feed back. I realized one thing if I create shape as positive then copper does not flow into the DUT area because of small spacing between the DUT pad annular ring. If shape is negative, there will be no annular ring around DUT VIA and we get enough spacing between the holes of the DUT VIA. ________________________________ From: "Moore, Blake" <Blake.Moore@xxxxxxxxxx> To: "icu-pcb-forum@xxxxxxxxxxxxx" <icu-pcb-forum@xxxxxxxxxxxxx> Sent: Fri, October 22, 2010 10:23:50 AM Subject: [PCB_FORUM] Re: Negative n Positive Shape We use both, it’s just a matter of what you get used to, which you prefer, I can say for me,positive tend to be more toward what you see is what you get, where with negative, you might find you need to look at the art work you created for fab. From:icu-pcb-forum-bounce@xxxxxxxxxxxxx [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Ali Sent: Thursday, October 21, 2010 9:12 PM To: icu-pcb-forum@xxxxxxxxxxxxx Subject: [PCB_FORUM] Negative n Positive Shape Hi Group, We are looking to use positive shape instead of negative. Does any body has idea on the consequence of using negative shape vs positive shapes? Thanks in advance.