Hi, Technetter, We are using epoxy & PMMA as a coating material to protect thick film. However we are seeing problem. Does anyone know the spec of these coating material , like water absorbability spec(@100C degree, 2hrs) or vapour absorbability spec? and Please advise some better coating material for protection of thick film? It is urgent for line stop. Thanks in advance! Davis ################################################################ TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c ################################################################ To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TechNet <your full name> To unsubscribe: SIGNOFF TechNet ################################################################ Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################