Tunnel effect in candles: what it is and how to prevent it from happening.

For crafters like us, the tunnel effect is both a challenge and an opportunity to better understand the science behind how a candle burns.

Tunneling, 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 the effectiveness of the burn and resulting in wasted wax.

The quality/composition of the wax and the diameter of the wick contribute greatly to this effect, but also the environment in which the candle is lit and how long the candle burns.

Poor quality waxes or unsuitable wicks can lead to uneven burning.

Drafts or the candle not being left burning long enough to melt completely (pool) on the first burn can intensify this effect.

This is why it is essential to allow the candle to burn long enough the first time to create a "pool" of melted wax that reaches the edges of the container. This will establish a pattern for subsequent burnings, helping to avoid tunneling and ensuring a more even burn throughout the life of the candle.

Compared to industrial candles, artisanal candles often have less wax waste. The meticulous attention we pay to material selection and production techniques helps maximize wax burn, significantly reducing tunneling and providing a more efficient and sustainable experience.