Ben Carter
Candle tunneling is a common issue where a hole forms down the center of the candle, leaving unused wax at the edges. This problem can drastically reduce the total burn time of your candle, as the wick descends deeper into the wax, causing the flame to go out. While tunneling can occur in any candle, it is often due to poor candle burning habits, such as insufficient burn time during the first light. To prevent tunneling, it is important to allow the entire surface of the candle to melt before blowing it out for the first time. Additionally, choosing high-quality candles with appropriate wick sizes and wax types can help avoid this issue. For candles that have already started to tunnel, the foil trick is a popular method to fix the issue, where a layer of aluminum foil is wrapped around the top of the candle, trapping heat and helping to melt the hard wax ring on the sides.
How to keep a pillar candle from tunneling:
| Characteristics | Values |
|---|---|
| Burn time | Burn the candle long enough to let the entire surface melt. |
| Wax type | Choose a wax type that is suitable for the type of candle and the climate. |
| Wick size | Ensure the wick is the correct size for the candle's diameter. |
| Room temperature | Keep the candle in a stable, room-temperature environment. |
| Candle quality | Choose a high-quality candle with premium wax and a properly-sized wick. |
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What You'll Learn
Ensure the wick is the correct size
Ensuring that the wick is the correct size is crucial in preventing candle tunnelling. Tunnelling occurs when a candle burns down the middle, creating a deep well or 'tunnel' of melted wax surrounded by a ring of unburnt wax. This happens when the candle does not burn long enough during its initial lighting, causing the wax to harden in a way that 'remembers' the previous melt pool. As a result, the candle will continue to burn straight down, creating the tunnel effect.
The wick plays a significant role in determining how fast and smoothly a candle burns. If the wick is too small for the candle's diameter, it might not generate enough heat to melt the wax all the way to the edge of the candle. This results in tunnelling, even if you allow sufficient burn time during the first lighting. Therefore, it is essential to choose candles with wicks sized appropriately for the candle's diameter, ensuring an even burn.
To determine the correct wick size for your candle, consider the candle's diameter and the type of wax used. Different types of wax have varying melting points. For example, a harder wax blend with a higher melting point may be more suitable for pillar candles. Ensure that the wick is sized appropriately for the jar or container size if your candle is not a freestanding pillar candle. Testing the wick before finalising your candle-making process is always a good idea.
Additionally, remember to trim the wick after each burn to promote an even burn and prevent soot marks on the glass container. A cleanly trimmed wick, about 1/4" in length, will allow the candle to burn more evenly. Proper wick maintenance also includes ensuring that the wick burns at a proper vertical angle, which can be achieved by keeping the candle away from strong drafts or flammable items.
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Burn for long enough to melt the entire surface
Burning a candle for long enough to melt its entire surface is crucial to preventing tunnelling. Tunnelling occurs when a candle burns down the middle, leaving a ring of unmelted wax around the edges. This happens when a candle is not burned long enough during its initial lighting, and it can significantly shorten the candle's life as the unused wax is wasted.
To prevent tunnelling, it is recommended to burn a candle for at least one hour for each inch in diameter on the first use, allowing the entire surface of the candle to melt before blowing it out. This process is known as setting the "memory ring" of the candle, as it determines how the candle will continue to burn in the future. If the wax is not allowed to melt to the edges during the first burn, the candle will likely continue to burn straight down, creating the tunnel effect.
The time required to melt the entire surface of a candle depends on its size. Larger candles may need up to two hours or more for a full melt pool, while smaller candles may only need an hour or less. It is important to note that burning a candle for too long can also be unsafe and increase the risk of fire. Therefore, it is recommended to follow the manufacturer's instructions and use common sense when burning candles.
Additionally, the type of wax used in the candle can impact its melting behaviour. Some wax blends are intentionally harder, with higher melting points, making them more suitable for warmer climates or pillar candles. Softer wax blends, on the other hand, may be more appropriate for container candles and cooler climates. Choosing the right type of wax for your candle can help prevent tunnelling.
By allowing enough time for the entire surface of the candle to melt during the first burn, you can effectively prevent tunnelling and ensure a clean, even burn throughout the life of the candle.
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Use a hairdryer to melt wax
If your candle has started to tunnel, you can use a hairdryer to melt the wax and fix the issue. This method is quicker than the aluminium foil trick, as it uses an external heat source. However, it can get messy, so make sure to cover your work surface with newspaper or a dust cloth to catch any wax spills.
Before you begin, ensure you are wearing old clothes to avoid any wax stains. Direct the hairdryer towards the candle, being careful not to blow wax across the room. It is important not to hold the hairdryer too close to the candle, as this could ruin its shape.
Using a hairdryer is an effective way to fix a tunnelled candle, but it is important to be cautious to avoid any accidents. This method can be used on pillar candles, which cannot be wrapped in foil.
By applying heat to the wax, you can encourage it to melt and create an even burn. This will help to prevent further tunnelling and ensure your candle burns evenly in the future.
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Wrap the candle in foil
Wrapping foil around a candle is a common method to fix tunnelling. Tunnelling occurs when a candle burns down the middle, creating a deep well or 'tunnel' surrounded by a ring of unburnt wax. This happens when the candle does not burn long enough during its initial lighting, which determines how it will continue to burn in the future.
To fix this issue, you can use tin foil to create a dome around the top of your candle, reflecting the heat back onto the unburnt wax. This causes the wax to liquefy and join the melting wax pool. When using this method, it is important to leave a small hole in the middle of the foil for the flame to breathe.
The foil method is a great way to fix tunnelling, but it is important to note that it only works with container candles, as you need a structure to wrap the foil around. Pillar candles, which are free-standing, are not suitable for this method.
While the foil trick is a handy way to fix tunnelling, it is always better to prevent the issue from occurring in the first place. To avoid tunnelling, ensure that your candle burns long enough for the entire surface to melt during its first burn.
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Choose a high-quality candle
Choosing a high-quality candle is an important step in preventing candle tunnelling. While it is true that tunnelling can occur in any candle, it is more likely to happen in cheap candles compared to luxury candles.
High-quality candles, such as those from the Highland Candle Company, use premium wax and wicks, reducing the risk of tunnelling. They use eco-friendly coconut and soy waxes, ensuring a clean and even burn. The wax blend is an important consideration when choosing a high-quality candle. Some waxes are intentionally harder, with a higher melting point, making them more suitable for warmer climates, pillar candles, or melts. On the other hand, softer waxes are more appropriate for container candles and cooler climates.
The quality of the wick is also essential. A wick that is too small may not produce enough heat to melt the entire surface of the candle, leading to tunnelling. Therefore, it is crucial to select a candle with a wick that is appropriately sized for the candle's diameter.
In addition to wax and wick quality, choosing a candle from a reputable company with extensive experience and superior craftsmanship can help ensure a high-quality product. For example, Charles Farris, one of Britain's oldest candlemakers, uses traditional crafting techniques that date back to 1845. Their luxury scented candles are designed to transform your space and create an ambiance of luxury and comfort.
By investing in a high-quality candle, you are setting yourself up for success and maximising the likelihood of enjoying a tunnel-free experience.
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Frequently asked questions
Candle tunneling occurs when a hole forms down the center of the candle, leaving unused wax at the edges. This happens when only a small portion of the wax surrounding the wick melts while the candle is lit.
Candle tunneling can be caused by a number of factors, including insufficient burn time, improper wick size, and poor wax quality. Insufficient burn time is a common cause, as the wax surrounding the wick may not have enough time to melt during the first burn, leading to tunneling in future burns. An improper wick size may also be to blame, as a wick that is too small may not generate enough heat to melt the wax at the edge of the candle.
To prevent candle tunneling, ensure that your candle is of high quality, with a properly sized wick and good-quality wax. During the first burn, let the candle burn until the entire surface has melted, which usually takes one hour per inch of candle diameter. Store your candles in a stable, room-temperature environment.
