After reading this thread yesterday, I decided to try and bring an old 510 back to life. The atty in question was about 2 months old. It still fired, but produced almost no vapor, no throat hit and I thought it was pretty much spent. I made a little funnel from a scrap of paper and poured in about 1/8 tsp of baking soda. I dropped in about the same amount of white vinegar and placed my thumb over the open end. The reaction was immediate and bubbles started to pour out of the battery end. I flushed it with vinegar a few more times to dissolve all of the remaining baking soda. (I'd probably used too much) Then I towel dried it as best I could and blew out all the remaining liquid. I did NOT rinse it in water. I dry fired it for about five seconds and put a few drops of 50/50 liquid in. I used it for the rest of the evening and hit it a few times before I left the house this morning. It works perfectly. Great vapor, throat hit, and flavor. I also did NOT notice any vinegar taste like some people have complained of. I'm new to
vaping, and the atty was one of the two 510s that came in the startup kit I bought when I first started all this a few months ago. I wish I'd not thrown out the other one I got in that kit, which quit on me a few weeks back. I've gone a little crazy buying gear and juice since I quit smoking. If I'm able to resurrect the other attys I've got now when they die, I could theoretically have enough stuff to get me through an entire year. Thanks to everyone who contributed to this thread.