Hi. Mi name is Eric Manrique. I have joined the technet forum a short while a go and i have learned a lot by simply reading your Q&A. Two months a go i started to work for a small company situated in Montreal, Canada. We are a subcontracting company for circuit board assemblies. I'm in charge of process, and i tend to have some hard discusions with my quality inspectors. Any time a solder joint is not nicely spread on the pad, it does not look stetic or the joint is formed around the leg but does not grasp it, they call it a cold joint. Witch involves production stopages. They allways blaim the reflow oven, therefore I have to re-profile the temperature on the oven to, in most cases, prove them that the profile is working fine. It has hapened that i found a profile not properly optimised, but then again the joint was obviously cold in most cases. [Sanddy look and dull grey and stay in a lump befor or behind the leg], but most often the problem is simply bad wetting due to component / board or solder paste contamination. My delema is that i have no visual aid to prouve/show the quality inspectors what a bad wetting or a cold joint realy looks like [they will not take mi word for it, and justly so beacause its no official proof] . The IPC has many examples, but when it comes down to SMT component bad wettings or cold joints, samples are lacking. (its probably our old edition?) Is there a document with good visual aid concerning the solder joint standards, and good examples of non compliance? Would the newest IPC revision be sufficient? Thankyou. Eric Manrique Process supervisor. ############################################################## 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 ##############################################################