Well, I already have some Kapton, so I'd like to get the low down on that before choosing plan B. But what is PVDF? That's one I've not heard of. Gary Lau Waltham, MA USA >Original poster: "Eric Davidson" <edavidson-at-icva.gov> > >Gary, > >For optimal UV resistance use PVDF. Its expensive, but unbeatable for UV >resistance. > >Eric