On the topic of soldering in atomizers and cartomizers, one thing I noticed on a few Clearomizers I bought (I don't normally use them) is a lot of flux left on the center post. They obviously don't clean them. Flux removal is something that is normally done after any electronics soldering, not just things you can be exposed to. For those who aren't aware, flux is a brown paste or thick liquid used to aid in the soldering process. It turns hard when exposed to the heat of soldering. The post on one of the Clearomizers was completely covered with it and all of them had some amount on there. I took the time to remove it before vaping with any of them. I'm more concerned about the flux residue than lead solder. Flux is fairly poisonous as well. Lead has to become quite hot before it will vaporize at all. Flux residue dissolves readily in e-liquid.