SMT Express, Volume 5, Issue No. 8 - from SMTnet.com Equipment Impacts of Lead Free Wave Soldering The popular tin (Sn) rich lead free solders are causing severe corrosion to many of the materials used in today�s Wave Solder systems
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PCB Libraries, Inc. | https://www.pcblibraries.com/forum/trimming-heels-under-the-component-body_topic12_post3020.html
. It makes sense that the solder would have an affinity for the metal of the pad and lead and so it wouldn't push outward. I'm happy to know there haven't been any assembly issues with regards to solder under component bodies