Hi,TechNetters, We are useing 4 mil double treatment thin core from AlliedSignal to build PCMCIA innerlayers. We find a great difficulty in instpection innerlayers with AOI (Insight/2020 Gerber).The machine just cann't see the deference between the circuit and background. To get a threshold value, we try defferent settings, *Changing high-inspection lamp *Adjusting the image threshlod sliders *Adding filters either on specular side or diffuse side, even on both sides.(600nm spectral filters) The result is negetive. I'm appreciate if anyone with thin core AOI instpetion experience can provide an answer. Thanks Wendy Fung R&D Engineer Guangzhou Printronics Circuit Corp *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To unsubscribe from this list at any time, send a message to: * * [log in to unmask] with <subject: unsubscribe> and no text. * ***************************************************************************