Paraffin candle burnt (or rather melted) WAY too quickly? So... I'm new to candle making; I got some paraffin (nobody here sells soy wax), molds, stearic acid and other ingredients. Today I was trying the second candle I made; it was not a small candle at all, it was about 6cm x 10cm; I used about 240 grams of wax for it, plus stearate, color and fragrance.

It looked pretty ok, I light it a while ago, left home and when I came back roughly 5 hours later, I found this:



So, what might be possible causes for this? What did I do wrong? One thing I know for sure I did different from another candle I made a while ago is this time I used a somewhat thicker wick. Could that be the reason? Was that one of many contributing factors?
You did not do anything wrong, except leave a candle burning for hours unattended. Candles melt when burning, and five hours is not a short time in a regular candles life.