Estimating Burn Time
1. Weigh your original candle before burning. (eg 8oz)
2. Then burn for 3 hours.
3. Weigh it again after you blow it out. (eg. 7.4oz)
4. Take the difference in weight (eg. 0.6oz)
5. Divide by 3 (for the # of hours burned) (eg. 0.2oz/hour)
6. Divide original weight by rate. (eg. 8.0oz/0.2oz = 40hours)