I want to clear thing up a bit, the way Allegro outputs Gerbers in the RS274X format, it is fully compliant with the format, and it works great for using Positive copper shapes for planes, really brings down the files size. What is really happening, is that each layer that contains positive polygons is made up of composite layers, this is done by the use of aperture MACRO function on RS274X. If you Fab house cannot read fully compliant RS274X gerbers I suggest you change Fab houses now. All FAB houses I have used in the past had no issues with RS274X Here in the US and Overseas ASIA. By the way IF you use Mentor Graphics pads, it also has the option of using aperture Macros. Best way to output RS274X I would suggest if using Allegro to output ODB++ it is superior to RS274X in terms, that the netlist is already embedded with the CAD Data. Iwish Pads had that feature. -Patrick Pat Johnson wrote: > If you are dealing with Advanced Circuits or another house using Valor or > Genesis, and if they have not been trained properly, they have issues reading > RS274X from Allegro. > > I just went through that routine with them just a few months ago. And the > conclusion was that they didn't know how to use their "tool" for multi-layer > RS274X especially in Allegro flavor. > > Pat J > Compu-Tier > > --------------------------------------------------------------------------------- > DesignerCouncil Mail List provided as a free service by IPC using LISTSERV 1.8d > To unsubscribe, send a message to [log in to unmask] with following text in > the BODY (NOT the subject field): SIGNOFF DesignerCouncil. > To temporarily stop/(restart) delivery of DesignerCouncil send: SET DesignerCouncil NOMAIL/(MAIL) > Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives > Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 > --------------------------------------------------------------------------------- > > -- Patrick Jabbaz Ubiquiti Networks 495-499 Montague Expwy Milpitas, CA 95035 T: (408) 942-3085 M: (408) 621-6533 --------------------------------------------------------------------------------- DesignerCouncil Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF DesignerCouncil. To temporarily stop/(restart) delivery of DesignerCouncil send: SET DesignerCouncil NOMAIL/(MAIL) Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ---------------------------------------------------------------------------------