Good day. How do you measure conformal coating thickness, without sectioning a board or a coupon? Which method (brush, dip, spray) has the best repeatability for thickness? We build board assemblies to IPC Class 2 and 3 and have no idea if we meet the requirements of paragraph 10.1.2.1. Regards, Dave Hipp Woodward Aircraft Engine Systems Electrical Production Engineering (815) 639-6732 FAX (815) 636-6040 ############################################################## TechNet Mail List 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 web site (http://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or 847-509-9700 ext.5365 ##############################################################