I don't think the average board house can build a .063 with a =/- .002. Is this a proto-type or production requirement? You may find someone to build it in a proto-type run but you may be hard pressed to find someone to take it in production. William W. DeCray III Waytec Electronics Corp Sales Engineer PHONE:(804) 237-6391 ext 115 FAX: (804) 237-1324 E-mail:<[log in to unmask]> Web <http://www.waytec.com> FTP <ftp://ftp.waytec.com> -----Original Message----- From: TechNet [mailto:[log in to unmask]]On Behalf Of d. terstegge Sent: Wednesday, July 05, 2000 11:56 AM To: [log in to unmask] Subject: [TN] Tolerance on board thickness Hi Technet, It's quiet on Technet. Or is it just me ? Problems with the server again ? Compensation for all the double messages from a few weeks ago ? Anyway, I've got a small question : We've ordered a 4 layer FR4 board with a thickness specification of 1.6 +/- 0.05 mm. The supplier says he can't build it with such narrow tolarances. The customer won't accept anything worse than this. What do you think, should the average fabhouse be able to build a board like this or is it completely unrealistic ? Hope to hear from you. Kind Regards, Daan Terstegge SMT Centre Signaal Communications Unclassified mail Personal Website: http://surf.to/smtinfo ############################################################## 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 Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ############################################################## ############################################################## 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 Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ##############################################################