JI'm currently thinking about doing a dolly for some shots that wouldn't be possible on my slider. So far I have rollerblade wheels (not as good as skate but still) and I was wondering about the rails. I thought about using some metal too, as I don't like the "flexibility" of PVC (in that particular case!). I though about using this:
As it's stainless it would be solid enough. What do you think?