Graham - The break out for that material specification is: Glass Fiber epoxy Natural color .0625" thick copper clad 1 oz each side with B3B quality. I can't recall what the B3B breaks out to but I can find the spec if you need it. Jeffrey A McGlaughlin, CID Engineering Designer Battelle 505 King Ave Columbus Ohio 43201-2693 Phone (614)424-7582 -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Graham Collins Sent: Thursday, May 14, 2009 8:56 AM To: [log in to unmask] Subject: [TN] PWB fab drawing - how thick is the copper? Hi Technet I've got a double sided board, no internal traces, and per the drawing the material is GFN0625C1/C1B3B. Does this spec define the copper weight? I have to do a repair and need to figure out how big a wire to use - so need to know the copper thickness. Usually our PWB drawings define it more clearly. Thanks! Graham Collins Halifax Production Engineering (902) 873-2000 ext. 6215 --------------------------------------------------- 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 ----------------------------------------------------- --------------------------------------------------- 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 -----------------------------------------------------