Just a note that might be helpful to users new to the 808 cartos. It might be tempting to fill, fill and fill some more liquid when starting on the filling process, but doing so will kill your atty. I killed one today. I did dissect it and was amazed at how much filler is jammed in there. It's really incredible actually. The tube you see in the center of the cart is actually wicking material for the wire, which in essence is the "atomizer" as best I can tell. Pretty simple, but so effective. Lesson learned.