I threw this question out once before but I still cannot determine the source of bubbles in our conformal coating process. We are using an acrylic coating and a Nordson Select Coat System. The bubbles come and go from day to day. We have looked at viscosity, temperature, humidity, pressure, z-height, contamination, micro-adjust, and a few other variables. Has anyone else seen this phenomenon or do you have any insight on it? Any help is very much appreciated. Thank you. *************************************************************************** * 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. * ***************************************************************************