Our standard edge spacing is 0.025"[0.64mm] for copper features and 0.050" [1.27mm] for component bodies. We often drop down to the 0.025"[0.64mm] for both for dense small boards. Our standard was suggested by our fabricator for best yield of routed boards. Jeffrey A. McGlaughlin PCB Designer Battelle Memorial Institute Columbus Ohio [log in to unmask] -----Original Message----- From: Hawes, Adam [SMTP:[log in to unmask]] What do you guys use as a std,rule of thumb package keepin from the edge of a PCB. We are using 1.5mm as standard but I have (the usual story) a small PCB with alot of components to get on! Any feedback from other designers and fabricators would be greatly appreciated. Regards, Adam Hawes GenRad Ltd. PCB Design Engineer