Ben Carter
Shrinking candles, also known as candle tunneling, is a common issue that occurs when a candle isn't burned carefully. It happens when a hole forms down the center, leaving unused wax at the edges. This can be caused by a variety of factors such as too much heat, an improper wick size, or a poorly formulated wax blend. Fortunately, there are several methods to fix this issue and ensure your candles burn evenly and efficiently. One popular method involves using aluminum foil to reflect heat back down to the edges of the candle, melting the outer wax and creating an even surface. Other techniques include using a hairdryer or heat gun to melt the wax, creating a hot water bath, or re-melting the candle in the oven.
How to fix a candle that has shrunk
| Characteristics | Values |
|---|---|
| Cause | Candle tunneling occurs when a hole forms down the center, leaving unused wax at the edges. This can be due to too much heat, an improper wick size, or a poorly formulated wax blend. |
| Prevention | To prevent candle tunneling, ensure you use the right wick size and burn your candles correctly. Trim the wick before lighting and keep the flame height low so that all of the wax is melted. |
| Solution | To fix a tunneled candle, you can use a hairdryer, heat gun, or oven to melt and smooth out the wax. You can also try the aluminum foil trick, which involves wrapping foil around the edges and letting the candle burn to melt the wax. |
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What You'll Learn
Use aluminium foil to reflect heat and melt wax
Shrinking in candles, also known as candle tunneling, occurs when a hole forms down the centre of the candle, leaving unused wax at the edges. This happens when a candle is not burned properly, such as when it is not left to burn long enough during its first use. Candle tunneling can also be caused by a poorly formulated wax blend, an improper wick size, or too much heat.
One way to fix a tunneled candle is to use aluminium foil to reflect heat and melt the wax. Here is a step-by-step guide:
- Cover the edges of the candle with aluminium foil, ensuring that the foil hangs over the built-up wax areas.
- Leave an opening in the centre of the foil for the wick to burn properly and to allow enough oxygen to reach the flame. The size of the opening will depend on the size of the candle; for larger candles, a bigger opening is required to allow the flame to burn strongly and create enough heat to melt the wax.
- Light the candle and let it burn for a few hours.
- The trapped heat will melt the outer wax, allowing the surface to even out.
This method may not work as well for larger candles or candles with tapered jars. It is also important to note that the quality of the wax and the shape of the container can affect the effectiveness of this technique. Additionally, for safety, ensure that the flame is not left unattended and that the candle is placed on a heat-resistant surface.
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Trim the wick to 1/4 inch or shorter
Trimming the wick to 1/4 inch or shorter is a simple yet effective way to fix a candle that has shrunk. This method is specifically targeting candle tunneling, a common issue where a hole forms down the centre of the candle, leaving unused wax at the edges. By trimming the wick, you can help ensure that the candle burns more evenly, preventing the formation of a deep tunnel in the wax.
Trimming the wick is a quick fix that can be done before lighting the candle each time. It is important to note that this method may not completely resolve severe tunneling, but it will help to reduce the problem and promote a more even burn.
When trimming the wick, ensure you do not cut it too short, as this could affect the candle's ability to stay lit. Ideally, you want to trim the wick to 1/4 inch or shorter, depending on the size of your candle and the severity of the tunneling.
Additionally, combining wick trimming with other techniques, such as using a higher-quality wax blend or a larger wick, can further help to reduce tunneling and create a more even burn.
Remember, the key to successful wick trimming is to ensure it is short enough to promote an even burn without being too short to light and maintain a steady flame.
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Melt wax with a hairdryer
If your candle has tunnelled, it is possible to fix it by melting the wax with a hairdryer. Candle tunnelling occurs when a candle isn't burned carefully, leaving a hole in the middle with unused wax at the edges. This can be caused by too much heat, an improper wick size, or a poorly formulated wax blend.
To melt the wax with a hairdryer, first, lay down some newspaper around the candle to avoid any mess from wax splatter. Ensure you are wearing clothes that can be washed in case wax gets on them. Next, turn on your hairdryer, setting it to high heat and low speed. Hold the hairdryer about six inches away from the candle and direct the heat towards the unmelted edges. Keep the hairdryer moving so that wax does not blow everywhere. Continue until the wax begins to soften and melt, then smooth it out.
It is important to note that if the tunnelling is severe, it may be difficult to salvage the candle. Additionally, if the candle has metal wick tabs, do not put it in the microwave as this can be dangerous.
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Use a higher-quality wax blend
If your candle has shrunk, it is likely due to a phenomenon known as "candle tunneling". This occurs when a candle is not burned properly, resulting in a hole forming down the centre and leaving unused wax at the edges. Candle tunneling can also be caused by a poorly formulated wax blend, with low-quality wax blends more prone to tunneling due to their low melting point.
To prevent and fix candle tunneling, it is recommended to use a higher-quality wax blend. By opting for a wax blend with a higher melting point, you can ensure that the wax melts evenly and efficiently, reducing the occurrence of tunneling.
When choosing a wax blend, consider the type of wax used and its quality. Pure beeswax, for example, tends to shrink and can be challenging to work with. It may be more advantageous to opt for a soy wax blend, such as 464 or 444 soy wax, which has been reported to have fewer issues with sinkholes and smoothness compared to pure beeswax. Additionally, soy wax blends are more affordable and offer more options for customisation.
If you are set on using pure beeswax, you can adjust the shrinkage by mixing in other waxes such as pure soy, coconut, or paraffin. However, doing so will result in losing the "pure beeswax" label and some of the natural scent associated with beeswax. It is worth noting that beeswax blends can be challenging to work with and are not commonly available commercially.
Ultimately, by selecting a higher-quality wax blend with a suitable melting point and composition, you can effectively prevent and address candle tunneling, ensuring your candles burn evenly and efficiently.
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Put the candle in the oven
If your candle has shrunk, you can put it in the oven to reshape the wax. This method is especially useful if you want to reuse the candle's container.
To do this, place the candle in an oven-safe container, such as a glass jar or a cookie sheet, and put it in the oven at 175 degrees Fahrenheit for 2 to 5 minutes. This will melt the wax, allowing you to reshape it.
It is important to note that you should not put a candle in the microwave, as most candles have metal wick tabs that can cause dangerous arcing. Additionally, be cautious when placing a glass candle in the oven, as there is a risk of overheating and shattering the glass.
If you don't want to use an oven, there are other methods to reshape the wax, such as using a crockpot, boiling water, or even leaving the candle in your car on a hot day.
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Frequently asked questions
This is a common problem with candles made from pure beeswax. To fix this, you can try doing a remelt—a few minutes in the oven will allow the top layer to melt and fill in the sides while maintaining the core. You can also use a heat gun or do a small second pour.
Candle tunneling occurs when a candle isn't burned carefully. To prevent this, make sure you use the right wick size and burn your candles correctly. Trim the wick before lighting each time and keep the flame height low so that all of the wax is melted.
There are several ways to fix candle tunneling. You can use a hair dryer or heat gun to melt and smooth out the wax of a tunneled candle. You can also wrap aluminum foil around the top of the candle, leaving an open space in the center for the wick. Burn the candle for a few hours; the trapped heat will help melt the outer wax, allowing the surface to even out.
Candle tunneling occurs when only a small portion of the wax surrounding the wick melts while the candle is lit. This can be caused by too much heat, an improper wick size, or a poorly formulated wax blend.
