The facts: I used C-3 wax, a apothacary jar(12 0z,rounded square, @ 3.5 inches across.) I used a Eco 12 wick (as per CS wick guide, Blueberry Cobbler(LS). I burned it at work, so I could watch it, then gave it to a friend to take home and test and let me know how the burn went. (Yes, shes a very good. friend who also helped me test my votives and tarts) Anyway she said it burned fine, full melt pool, great CT & HT. However approximately after burining about 2/3 of the way down it tunneled, and the wick burned all the way down to the metal tab. I noticed in the office that the wick kinda had a big flame, and mushroomed a little. What would cause this ? Should I wick down, or try a different kind of wick ? The same time I made that candle, I made the same using the same wax, container, Cinna-vanilla scent, but I wicked up, this one had alot of hang on the sides. On a good note, they both smelled great, and I really like the C-3 wax. I really enjoy making candles, yes....verry addictive ! Thanks, Deb