We had some solvent exposure at work that made for a good picture of solvent embrittlement on PC/ABS. You can see that that once the solvent flashes off you can see the plastic swells up and leaves opaque spots. I started doing some trials where any time there is some molded in stress I run some solvent rags over the part and it directly shows any surface issues. I also did some trials where I left PC/ABS in a can of paint solvent and the plastic completely deteriorated and turned into the consistency of wet cardboard.
