Jessie Taylor
Candle tunneling is a common issue where a hole forms down the centre of the candle, leaving unused wax at the edges. This is caused by wax memory, where wax that has been previously melted takes less heat to re-melt, causing the wax to melt at different rates and resulting in a tunneling effect. This issue can be easily fixed with a few simple methods, such as using aluminium foil to cover the candle, using a hair dryer to melt the wax, or trimming the wick.
How to Un-Tunnel a Candle
| Characteristics | Values |
|---|---|
| Cause of tunneling | Burning a candle for too short a time, allowing wax to "remember" the shape of the melt pool and melt the same way again. |
| Fix tunneling with | Aluminum foil, hair dryer, heat gun, candle topper, metal candle holder, candle warmer, tin foil, spoon, wick dipper, small metal spatula |
| How to use aluminum foil | Cut a hole in the center of the foil, cover the candle, light the wick, replace the foil, and allow the candle to burn for a few hours. |
| How to use a hair dryer | Set to low speed and high heat, heat the top surface of the candle from a distance, and continue until the wax has melted and smoothed over. |
| How to use a candle warmer | Use to melt the candle's wax and release the scent without a flame. |
| How to use a spoon | Scoop out the unmelted wax until it is the same height or lower than the melted wax in the middle. |
| How to use a wick dipper or small metal spatula | Carefully scrape at the unmelted wax on the sides to help it melt faster. |
| How to prevent tunneling | Trim the wick, burn the candle long enough to melt the entire surface, avoid placing the candle near an open window, fan, or drafty area. |
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What You'll Learn
Use a hairdryer to melt the wax
If you're working with a small tunnel, a hairdryer can be a useful tool to fix candle tunnelling. Candle tunnelling occurs when only the centre of the wax melts, leaving a thick ring of unmelted wax around the edges. This not only wastes your candle but also shortens its lifespan.
To fix this, first, extinguish the candle flame if it is lit. Then, grab your hairdryer and turn it on, adjusting the setting to medium or high heat. Hold the hairdryer over the candle, focusing the airflow on the top of the candle. Keep the hairdryer far enough away from the candle to avoid spattering any wax. Continue until the top layer of wax has melted and smoothed.
If you're dealing with a more serious case of tunnelling, you may need to combine the hairdryer method with another technique. Try using a butter knife or spoon to gently scrape away the unmelted wax around the edges, being careful not to damage the wick or container. You can also use aluminium foil to wrap around the top of the candle, leaving a small opening for the wick and flame. This will increase the heat and help melt the wax.
Remember, prevention is always better than cure. To prevent tunnelling, allow your candle to burn long enough during its first use to create a full melt pool that reaches the edges of the container. Keep the wick trimmed to 1/4 inch before each burn, and store your candles in a cool, dry place away from drafts.
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Cover the candle with aluminium foil
Covering a candle with aluminium foil is a popular trick to fix candle tunnelling. It is a simple and effective method, but it should be approached with caution as the foil can get hot.
Firstly, light your candle. Then, carefully wrap a layer of foil around the top of the candle, creating a dome with a hole in the top. The hole should be around one inch wide to allow the flame to get enough oxygen to burn. The foil will help to keep the heat concentrated within the candle, melting the hard wax on the sides.
After an hour or two, carefully remove the foil. The surface of the candle should now be even, with a pool of melted wax reaching the edge of the container. If not, the hole in the foil may be too small, so try again with a slightly larger hole.
This method works by increasing the heat while keeping the vessel insulated, causing the excess wax to melt. It is important to note that the foil can get very hot, so be careful to let it cool before adjusting or removing it.
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Trim the wick
Trimming the wick is an important step in preventing and fixing candle tunneling. Candle tunneling occurs when a candle burns down its centre, leaving unmelted wax around the outside. This can be caused by an uneven or improper initial burn, strong drafts, or an overly long wick.
To trim the wick, use a candle wick trimmer, if possible, to trim the wick to a length of about 1/4 inch before lighting the candle. This will help to ensure a cleaner, more consistent burn. It is important not to trim the wick too short, as this can affect the quality of the burn.
Trimming the wick is especially important if your candle has already started to tunnel. In this case, trim the wick and remove any debris from inside the tunnel. You can then use a hair dryer or heat gun to gently melt the wax around the tunnel, being careful not to spatter the wax. Alternatively, you can use aluminum foil to reflect heat back onto the candle and help melt the wax around the tunnel.
By taking the time to trim the wick and address tunneling through methods such as applying heat or using aluminum foil, you can help ensure your candle burns evenly and efficiently, maximising its burn time and scent potential.
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Burn the candle for 3-4 hours
Burning your candle for 3-4 hours is an effective way to prevent candle tunnelling. This is because wax has a "memory" – previously melted wax is softer and takes less heat to re-melt, so when you re-light your candle, the wax melts at different rates, resulting in a tunnelling effect. Therefore, by burning your candle for 3-4 hours, you allow the wax to "remember" how far from the wick it melted, and it will melt the same way again the next time you light it.
However, the time it takes to melt the top layer of wax varies depending on the candle, so make sure to read and follow any instructions provided by the manufacturer. Don't burn your candle longer than the recommended time on the label. Generally, it takes 1-2 hours for the wax to melt to the edge of the container, depending on the size of the candle's surface.
If you are using a jar candle, it is recommended to burn it for a few hours until the entire top layer of wax has melted to prevent tunnelling. This is because the first burn is the most important to prevent tunnelling.
If your candle is already showing signs of tunnelling, you can use a hair dryer to gently melt the wax to the edge of the container. Alternatively, you can use the aluminium foil method to fix tunnelling. First, light your candle, then cover the top of the candle with a piece of aluminium foil, poking a hole in the middle for the flame to get enough oxygen. The foil will help hold in enough heat to melt the entire surface of wax.
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Use a candle warmer
Candle tunneling is a common problem that occurs when a candle burns down its centre, leaving hard wax around the outside. This not only looks unsightly but also reduces the burn time and scent throw of the candle.
One way to fix candle tunneling is to use a candle warmer. Candle warmers are electric devices that melt candles without using an open flame. They produce a consistent and uniform heat that melts the wax evenly from the bottom up, helping to prevent tunneling and maximise burn time. Candle warmers are particularly useful for scented candles, as the heat they produce efficiently releases fragrance oils, enhancing the scent and making the aroma more pronounced.
When using a candle warmer, it is important to follow safety precautions. Always ensure that the candle warmer is designed for use with candles, as some warmers are intended for wax melts or essential oils only. Never leave a candle warmer unattended, and keep it away from flammable objects, children, and pets.
To use a candle warmer to fix tunneling, place the candle on the warmer and turn it on. Allow the candle to warm for a few hours, ensuring that the heat is consistent and uniform. The wax will gradually melt, starting from the bottom up. Once the wax has melted evenly, turn off the candle warmer and allow the wax to cool and harden. Your candle should now have a smooth, even surface without any tunneling.
By using a candle warmer, you can effectively fix candle tunneling and restore the even burn and aesthetic appeal of your candle.
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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.
To prevent candle tunneling, it is recommended to trim the wick to 1/4 inch and remove debris from the wax before each burn. It is also important to burn the candle long enough (usually 1-2 hours) for the entire surface of the wax to melt before blowing it out.
To fix a tunneled candle, you can use a hair dryer or heat gun to melt the wax around the tunnel. You can also use aluminum foil to cover the top of the candle, leaving a small opening for the wick and flame. This will help to insulate the candle and melt the excess wax.
