It great to be able to be inside the Fab house where simple tools as you stated work great. I used to do that too once upon a time I a previous life, the other bib blue. I measure SM on board/planar during the Reliability QUAL process during destructive analysis phase. It Depends!! Where one is gathering the measurements. Victor, -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Ken Bloomquist Sent: Wednesday, June 23, 2010 11:31 AM To: [log in to unmask] Subject: Re: [TN] Conformal Coating measurment Wow, some of you must have really deep pockets, laser, cross section, digital Keyance, etc. All this to measure what has a tolerance as wide as a ship, .003 +/- .002! We use a glass slide with a piece of tape on one side that goes a little over half way. We do the same on the other side at the opposite end. The slide is placed in the middle of each tray of boards and follows them for each coating on each side. It gets sprayed along with all the boards making it representative of the coating on the boards. We remove the tape from both sides of the slide and measure the middle where there is no coating. We then measure each end to get the thickness for each side of the boards. We use a very good ratcheted micrometer so there is always equal pressure applied to each measurement. It works great and is cheap! KennyB -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Jean-François Bissonnette Sent: Wednesday, June 23, 2010 8:52 AM To: [log in to unmask] Subject: [TN] Conformal Coating measurment Hi Technetters, What is the proper method for measuring conformal coating thickness? Were're using a micrometer but I doubt that the method is reliable. A wet gauge is not out of the question but we would prefer to measure thickness once the coating is cured. Thanks! Jean-François Bissonnette [log in to unmask] ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ----------------------------------------------------- ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------