I found this at Lonestar, I'll keep searching. .http://www.lonestarcandlesupply.com/candle-making/candle-wicks/ Wooden wicks are for use in containers, and should not be used in pillars or votives. Wooden wicks can be used in paraffin or soy. When using our wooden wicks in pure soy, we recommend using the large or extra large wick. This is to make sure the melt pool is wide enough since pure soy wax tends to hold in the heat, as well as fragrance. To achieve a good "crackle" sound with the wooden wicks, it is very important that you do not use too much fragrance oil. The crackle is a direct result of the correct amount of fragrance oil, type of wax, and amount of dye being used. This one says they can be used in Pillars: http://www.woodcandlewick.com/