I did a little research and I was always led back to the Bulli A2 atomizer from Germany. It appears that no one has truly identified what material to use for a wick and if using a fiberglass material is really safe. I guess this is a use at your own risk type of answer.
I think e-cigs in general right now are use at own risk lol, but that seems to be the safest thing I have found, and the possibility of inhaling glass dust or particles once it is whetted with e-juice is infinitesimal. But I was just curious if anyone knew yet what the normal 510 atty uses?