Hello Everyone, Found this message board 2 days ago and have been reading ever since. You are so helpful to everyone - that I feel comfortable to jump right in. I'm reading that wick sizes can change due to the density of the oils. How does one find out the differences in the oils. I read that vanilla and cinnamon are difficult and saw the same thing about Patchouli. Does it have to do with the flashpoint? As I kept reading - I was saying "So help me - I have so much to learn." Hence, my name. Thanks! soyhelpme