Alcohol, blown dry (off of one end) with dry nitrogen. Assuming you are using a rosin based flux type R or RMA used "sparingly" like the man says. Ron Dieselberg -----Original Message----- From: Nancy M. H. Holloway [mailto:[log in to unmask]] Sent: Tuesday, January 04, 2000 12:21 To: [log in to unmask] Subject: [TN] cleaning flex circuits TechNet, What is the best technique to clean flux off of a polyimide flex circuit after population? Thus far, we have been cleaning the flex circuits with alcohol but it is time consuming and tedious. We use a machine to clean rigid boards, but I am hesitant to use it for our flex circuits. How are you all cleaning your soldered flexible printed circuit boards. Thanks, Nancy ############################################################## 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 ############################################################## ############################################################## 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 ##############################################################