Hi Bill, I was thinking the same thing, so last night I deleted all symbols, and vias in a copy of the design, purged unused pad stacks, ran a dbcheck, and still COVERLAY was there. The bigger problem that I was not going to get into is I believe this layer is interfering with a proper usage of COVERLAY_TOP and COVERLAY_BOTTOM. I have built padstacks that mirror properly in a new .brd, but the COVERLAY_BOTTOM will not work in this current board. Same padstack, same symbol works in a brand new board, not in the current board. Any other thoughts? Thanks, Chris From: icu-pcb-forum-bounce@xxxxxxxxxxxxx [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Bill Zembek Sent: Tuesday, April 24, 2012 5:22 AM To: icu-pcb-forum@xxxxxxxxxxxxx Subject: [PCB_FORUM] Re: how do I delete an unused pad layer from a board database? Hi, I would think it is in a padstack in the brd. I would look at my padstacks and remove it from the padstack and Update the brd. You can't remove it from the subclass list like a custom layer. You would have to remove it from the padstack. Regards, Bill Zembek Technical Support - Allegro Specialist EMA Design Automation, Inc. 225 Tech Park Drive Rochester, New York 14623 Phone 585-334-6001 Opt 5 Fax 585-334-6693 www.ema-eda.com<http://www.ema-eda.com> http://support.ema-eda.com From: icu-pcb-forum-bounce@xxxxxxxxxxxxx [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Nunn, Christopher Sent: Monday, April 23, 2012 10:03 PM To: icu-pcb-forum@xxxxxxxxxxxxx Subject: [PCB_FORUM] how do I delete an unused pad layer from a board database? Hi, I hope this isn't a stupid question... I am having a real issue removing a non-conductor pad stack layer called COVERLAY from a board database. I did not create the database, so I don't know how that pad stack layer got created. Now that I able to create a COVERLAY_TOP and COVERLAY_BOTTOM to the source pad stack, I really need to delete COVERLAY. [cid:image001.png@01CD21F3.5CD64C10] Thanks, Chris