Paul, A few things to look at: - How is the copper plating inside the component hole? - How is the Preheat on the wave? - How much of a heat sink does the board design present? - What type of flux are you using? - Does the flux used have time to actually work the surface? - Did you do a solderability test on the coupon of the bare board? - Did you do a solderability test on some of the components? After answering a few of these questions it might be easier to help, but the wave temperature may be a bit low, especially if the preheat is not sufficient. Alain Savard, B.Sc. Chemical Process Analyst CAE Electronics Ltd. e-mail: [log in to unmask] -----Original Message----- From: Paul Tomlinson [mailto:[log in to unmask]] I am just learning about these matters, and this is THE place where knowledge and experience abounds so please somebody help me with this. I have just had my first ever boards waved and the results are not encouraging. What could be the cause of a volcano shaped void between the component leads being soldered and the main body of the solder? There is perfect continuity, the area at the tip and that around the board are well wetted, but mechanically the joints are very weak and prone to failure, the parts can actually be pulled out of the board without being damage. Could this be simply the result of a too low temperatured wave? They used 465F. ############################################################## 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 ##############################################################