Gary We purge unused padstacks when we create new physicals; especially when we create a make-from. It keeps the library database a little smaller, after all who needs a 3 pin sot that has 15 padstacks attached to it? I believe that it also helps because Allegro has a habit of remembering old junk that takes extra time to clean up. Please let me know if you have any questions. Shirley It is a PRIVILEGE to be born free. It is a RIGHT to live free. It is a DUTY to die free. ________________________________ From: icu-pcb-forum-bounce@xxxxxxxxxxxxx [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Macindoe, Gary Sent: Wednesday, August 25, 2010 10:04 AM To: icu-pcb-forum@xxxxxxxxxxxxx Subject: [PCB_FORUM] Re: Purge Unused Padstacks Chris, Thanks for the reply. I don't use Library Workbench, but I think I'll start doing the "purge" on every design anyhow. Regards, Gary MacIndoe Senior PCB Layout Designer Contract - Kelly Services Covidien EbD R&D 5920 Longbow Drive Boulder, CO 80301 303.476.7458 www.covidien.com From: icu-pcb-forum-bounce@xxxxxxxxxxxxx [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Shaw, Christopher Sent: Wednesday, August 25, 2010 10:55 AM To: icu-pcb-forum@xxxxxxxxxxxxx Subject: [PCB_FORUM] Re: Purge Unused Padstacks Gary, Just FYI, if you ever want to use the Library Workbench (in Allegro Design Workbench) then the library import facility requires that all the parts are squeaky clean, including purging unused padstacks. Chris From: icu-pcb-forum-bounce@xxxxxxxxxxxxx [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Macindoe, Gary Sent: Tuesday, August 24, 2010 3:00 PM To: icu-pcb-forum@xxxxxxxxxxxxx Subject: [PCB_FORUM] Purge Unused Padstacks Hey guys, Are you purging unused padstacks before sending your design to Fab (Tools -> Padstack -> Modify Design Padstack, Purge -> All)? If so, what is the benefit? What is the downside to not purging? Is it simply a database cleaning function? Thanks for any responses. Regards, Gary MacIndoe Senior PCB Layout Designer Contract - Kelly Services Covidien EbD R&D 5920 Longbow Drive Boulder, CO 80301 303.476.7458 www.covidien.com