http://www.scribd.com/doc/2887378/PCB-Fab-Wallchart Download and print the wall chart at this link. It gives most of the IPC re= quirements for PCB manufacture. --=20 Scanned by iCritical. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .