i am trying to do now a fake way of blurrying teh reflection. if the enviorment map is blury it looks better. but the reflection or objects around the metal would still be sharp.
i was reading a paper from pixar about how they did soft reflection in Ratatouille
graphics.pixar.com/library/SoftReflections/paper.pdf

we dont need details and it doesnt need to be accurate when its soft. but i dont think this can be done in poser.