
Filling a candle jar is a fun and simple activity that can be done at home. It is also a great way to recycle old candle jars and reduce waste. There are a few different methods for filling a candle jar, but they all involve melting wax and pouring it into the jar. It is important to ensure that the jar is clean and dry before filling it with wax, and to be careful when handling hot wax to avoid spills and burns. Once the wax is melted, it can be poured into the jar, and a wick can be added. The candle will then need to cool and harden completely before it can be lit.
How to fill a candle jar:
| Characteristics | Values |
|---|---|
| Step 1 | Remove the label from the candle jar, if there is one. If the glass has cracked, it should not be reused. |
| Step 2 | Melt and remove any remaining wax. |
| Step 3 | Clean the jar with hot, soapy water and dry it thoroughly. |
| Step 4 | Place the jar on a protected surface, such as a pan lined with tin foil, to catch any overflow. |
| Step 5 | Pour boiling water into the jar, leaving some room at the top. |
| Step 6 | Allow the water to cool completely, then remove the wax. |
| Step 7 | Secure the wick in the centre of the jar, ensuring it is tall enough for the jar size. |
| Step 8 | Melt the new wax in a double boiler or oven and pour it into the jar. |
| Step 9 | Add a few drops of scent to each jar and any other desired ingredients, such as crystals. |
| Step 10 | Allow the candles to cool and harden completely before cutting the wicks. |
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What You'll Learn

Removing labels and old wax
Removing Labels
The first step in giving your candle jar a new lease of life is to remove any existing labels. Soaking the jar in hot water is an effective method to loosen the adhesive. Fill your sink or a tub with hot water, adding a splash of dish soap or laundry detergent to boost the power. Submerge the jar and let it soak for at least an hour, or leave it overnight for particularly stubborn labels. Once the label has softened, use your hands to peel it away. If there is any leftover paper or adhesive residue, use a sponge to scrub it off.
For precision removal, a razor blade or X-Acto knife can be carefully slid under the edge of the label to lift it off in sections. This method is especially useful for clear or printed-on labels that may be more resistant to soaking.
Alternatively, heat can be employed to remove labels, especially those on glass jars. A hair dryer set to high heat and directed at the label for 30-second intervals can effectively loosen the adhesive. Once the label peels off, use a soapy sponge to remove any remaining glue.
For extremely stubborn stickers, specialty label removers like Goo Gone or Turtle Wax Sticker Remover are recommended. Apply these products with a rag or paper towel, let them sit for around 15 minutes, and then peel off the label. Finally, clean any remaining residue with soap and water.
Removing Old Wax
There are several methods to remove old wax from your candle jar, each with its own advantages:
- Hot Water Method: Boil water and carefully pour it into the candle jar, filling it halfway. As the water cools, the wax will rise to the surface, where it can be easily removed.
- Freezer Method: Place the jar in your freezer overnight. The wax will freeze and peel away from the sides, allowing you to remove it with a knife.
- Oven Method: Place the jar in an oven set to a minimum of 250°F (120°C). Once the wax has melted, carefully pour it out and wipe the inside of the jar with a paper towel.
- Hair Dryer Method: Similar to the oven method, use a hair dryer set to hot and direct the hot air towards the sides and bottom of the jar. The wax will melt and can then be poured out.
After removing the wax, ensure you wash your jar with soap and water to get rid of any remaining residue.
Now that your candle jar is free of labels and wax, it is ready for its next use!
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Cleaning the jar
Filling a candle jar is a great way to recycle and reuse old candle jars. The first step to filling a candle jar is to clean it thoroughly. Here is a detailed, step-by-step guide on how to clean a candle jar:
First, remove any labels from the candle jar. If the label does not peel off easily, soak the jar in hot water for a few minutes. This will help loosen the adhesive, making it easier to remove the label. If there is any remaining glue residue, it should wipe off easily with a damp cloth after the jar has been soaked.
Next, fill the jar with hot or boiling water. This will melt any remaining wax in the jar, allowing it to float to the top. You can use an electric kettle or simply boil water on the stove. Fill the jar about halfway, as the wax will rise to the surface. Allow the jar to cool completely before handling. This may take about an hour.
Once the jar is cool, remove the wax from the surface of the water. You can use a spoon or butter knife to lift and remove the wax. If there is any remaining wax residue, use an abrasive sponge or cloth, along with some dish soap, to scrub the jar thoroughly. Repeat this step as needed until all the wax residue is removed.
Finally, dry the jar thoroughly. You can use a hair dryer set on hot to speed up the drying process if needed. Ensure the jar is completely dry before refilling it with new wax.
By following these steps, you can effectively clean and prepare your candle jar for refilling, giving it a new life and reducing waste.
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Choosing the right wick
The first step in choosing the right wick is to measure the internal diameter of your candle jar. The diameter of your vessel will play a big part in choosing the right wick. You will also need to consider the height of your candle. However, the height is not as important as thickness, as you will be trimming the wicks to size later. The only time the height of your candle matters is when it will be taller than the length of a pre-tabbed wick. In this case, you will need to purchase spooled wick and tabs to create custom wicks.
The next step is to consider the amount of fragrance or colour you plan to add to the candle. The more colour or fragrance you include, the thicker you'll want your wick to be. The type of wax you use will also impact the wick size. For example, ""single pour" paraffin waxes and vegetable-based (soy) waxes generally require a larger wick. Additionally, the blend of oil with the wax will cause the wick to burn differently than an unscented candle, and you may need to use a larger wick.
There are many different types of wicks available, and the right one for you will depend on your specific needs. Cored wicks consist of an outer layer of braided or knitted fibres around a core material that helps the wick stand upright in molten wax. Flat braided or knitted wicks are manufactured from high-performance fibres and result in a cleaner-burning, self-trimming wick with additional structural strength. Coreless, cotton braided wicks with paper filaments woven into the braid are designed to bend at the tip when burning, forcing the tip of the wick into the outermost portion of the flame, resulting in more complete combustion and less carbon buildup.
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Melting and pouring wax
Melting wax is a simple process, but it requires careful attention to ensure the wax is at the right temperature for pouring. There are several methods for melting wax, including using a double boiler, an oven, or a microwave.
The double boiler method involves using steam as a heat source to melt the wax. To do this, fill a large pan with water and place it on a hob or hotplate to heat. Then, place your wax in a smaller pan, glass bowl, or pouring jug, and put this inside the larger pan. Heat over medium heat until the wax has melted. This method is ideal for melting leftover candle wax.
Another option is to use an oven. Preheat your oven to 200°F and line a baking sheet with aluminum foil or parchment paper. Place your jars on the parchment paper, add a wick to each jar, and fill with wax pastilles. Put the jars in the oven for 45-60 minutes until the wax is fully melted, adding more wax pastilles if necessary. If you want to add essential oils, do so while the wax is still liquid.
You can also melt wax in a microwave, although you should never put a jarred candle in the microwave as the discs that attach the wick to the holder are made of metal. Instead, pour your wax into a microwavable container, such as a ceramic or glass dish, and heat for one minute at a time, monitoring the temperature until it reaches 80°C.
Once your wax is melted, it's time to pour it into your chosen container. Make sure the wax is at the proper temperature for pouring—too cool and you'll get zebra stripes on the sides of your jar, too hot and you'll end up with sinkholes. Simply pour the wax into your jar slowly and carefully, being careful not to splash it on the sides.
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Adding scent and decorations
Once you've chosen the jar you want to use, it's time to think about adding scent and decorations.
First, decide on the scent you want to use. You can use essential oils or fragrance oils to create your desired scent. For an 8-ounce candle, it is recommended to use 30-40 drops of essential oil. You can also get creative and experiment with different combinations of scents to create unique fragrances. For example, you could try combining lavender and vanilla or citrus and herbal scents.
Next, carefully pour the desired amount of oil into your melted wax. Stir gently to ensure the scent is evenly distributed. If you're using multiple scents, you can create layers by pouring the scented wax one layer at a time and allowing each layer to dry before adding the next.
If you want to add decorations to your candle, there are several options to consider. Dried flowers, herbs, or spices can be added to the wax for a natural, rustic look. You can also add glitter or coloured sand for a more glamorous and sparkling effect. Small items like crystals, beads, or seashells can be embedded in the wax to create a unique and personalised decoration.
Remember to be cautious when adding decorations, as some items may not be suitable for use in candles due to safety concerns or may not withstand the heat of the melting wax. Always make sure the decorations you choose are safe and compatible with your candle-making process.
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Frequently asked questions
Place the candle jar in a sink and pour boiling water into it, leaving some room at the top. The hot water will melt the wax, which will then float to the surface. Allow the water to cool completely, then remove the wax.
Wash the jar with hot, soapy water, then dry it thoroughly. If there are any labels on the jar, soak the jar in hot water and they should come right off.
Choose a wick that is tall enough for the size of the jar. Secure the wick so that it stands upright in the centre of the jar. You can use a skewer, chopstick or similar item to wrap the extra length of the wick around.
Preheat your oven to 200°F. Line a baking sheet with aluminium foil or parchment paper. Place the jars on the parchment paper, put the wick in the centre and fill with wax pastilles. Put the jars in the oven for 45-60 minutes until the wax is fully melted. Remove from the oven and add essential oils if desired. Allow the candles to cool and cure completely (about 24 hours) before lighting.











































