Tunnel effect in candles: what it is and how to prevent it from happening.
Partilhar
For artisans like us, tunnelling is both a challenge and an opportunity to better understand the science behind burning a candle.
Tunnelling, often seen as an imperfection, occurs when a candle does not burn evenly, leaving a path of unmelted wax around the flame/wick. This effect can deepen each time the candle is lit, decreasing burning efficiency and resulting in wasted wax.
The quality/composition of the wax and the diameter of the wick contribute greatly to this effect, as do the environment in which the candle is lit and the duration of the candle's burn.
Low-quality waxes or inadequate wicks can lead to uneven burning.
Draughts or not letting the candle burn long enough to completely melt (pool) on the first burn can intensify this effect.
Therefore, it is essential to allow the candle to burn for long enough the first time to create a "pool" of melted wax that reaches the edges of the container. This sets a pattern for subsequent burns, helping to prevent tunnelling and ensuring a more even burn throughout the candle's lifespan.
Compared to industrial candles, artisan candles often have less wax waste. The meticulous attention we pay to material selection and production techniques helps maximise wax burning, significantly reducing the tunnelling effect and providing a more efficient and sustainable experience.
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