Sprayable Body Filler

[Duesey2]

What are you guys filling with this stuff? Just curious as a good metal guy shouldn't need to be spraying filler. Most panels shouldn't need more than a skim for perfection. Does this stuff shrink more than standard filler? I would think it would since normal filler doesn't have solvent evaporation like these sprayables. Only experience I have with featherfill is my grandfather telling me how bad it was in the 70's. It wasn't good from what I remember and he used to say you have no business doing metal work if your using it. He is an old school lead guy that is just now starting to trust plastic fillers. Apparently it wasn't good when it came out. I know my experience is worthless since this stuff has came along way but I was just curious what type of application it's being used for.