Troubleshooting Common Candle Making Problems UK: Questions Answered

Question 1

Why is my candle only burning down the middle?

Accepted Answer

This happens because the wax has formed a memory ring during the first burn, preventing the melt pool from reaching the jar's edges. You need to let the candle burn for one hour per inch of diameter on its first run to establish a full melt pool. If the tunnel is already set, you can gently melt the walls down with a heat gun and let it cool undisturbed.

Question 2

How do I stop my candle from smoking?

Accepted Answer

Smoking usually means the wick is too long or too thick for the soy wax, causing incomplete combustion and soot buildup. You should trim the wick to an eighth of an inch before every lighting to keep the flame steady and clean. It is also important to place the candle in a still-air environment to prevent the flame from flickering and spitting.

Question 3

What are those wet spots on my candle glass?

Accepted Answer

Wet spots appear when the wax shrinks away from the glass during cooling, usually because the wax cooled faster than the container. This creates a translucent, watery circle that you can often see moving when you shake the jar gently. These defects often make their debut twenty-four hours after pouring when the wax finishes its final shrinkage cycle.

Question 4

Why does my candle top look cracked or uneven?

Accepted Answer

Cracking occurs when the outer wax solidifies faster than the inner wax, creating tension that splits the surface as it cools. This is often caused by pouring at the wrong temperature or cooling the candle too quickly in a drafty room. You can usually fix cosmetic cracks by gently melting the surface and allowing it to settle, but prevention is key.

Question 5

How long should I wait before burning my candle?

Accepted Answer

You need to let soy wax cure for seven to fourteen days to allow the fragrance oils to bind properly with the wax molecules. Burning a candle too early results in a weak scent throw and a harsh smell that doesn't fill the room. The curing period ensures the candle performs its best when you finally light it.

Question 6

My candle keeps drowning or the flame is too big.?

Accepted Answer

A large flame usually points to a wick that is too big for the size of the jar or the type of wax you are using. This can cause the candle to burn too hot and create a lot of smoke or soot on the glass. You should check the wick size against the jar diameter to ensure it creates a steady, controlled burn.

Question 7

Why is there a milky haze on the top of my candle?

Accepted Answer

That milky haze is known as frosting and happens when the wax cools in a way that creates a separation on the surface. It is usually caused by a temperature differential between the wax and the container, where the wax cools faster than the glass. This defect is cosmetic and does not affect the burn, but it can be frustrating to see after you finish pouring.

Question 8

How do I fix a candle that won't stay lit?

Accepted Answer

If a candle struggles to stay lit, it is often because the wick is too small for the amount of wax in the jar. A correctly sized wick creates a wider flame that can melt through the wax pool to establish a proper melt pool. You might need to switch to a larger wick size to ensure the candle burns consistently.

Question 9

Can I pour wax into a jar that is still warm?

Accepted Answer

You should never pour wax into a jar that is still warm from a previous batch because the heat can cause the wax to crack or shrink unevenly. Even a few degrees of heat can trigger temperature shock, leading to cracks or an uneven top surface. It is best to let the jars cool completely to room temperature before you start your next pour.

Question 10

Why is my candle smell weak when it is burning?

Accepted Answer

A weak scent throw usually means the candle was burned before the wax and fragrance had time to settle and bind together. For soy wax, the ideal curing time is seven to fourteen days to achieve maximum scent throw. If you burn it too soon, the fragrance oils haven't had enough time to integrate with the wax molecules.

Question 11

Why is there a ring of unmelted wax around the jar?

Accepted Answer

This ring of unmelted wax is caused by the wax forming a memory ring during the first burn that prevents the melt pool from reaching the edges. It is usually the result of burning the candle for too short a time on the first attempt or using a wick that is too small. You need to let the candle burn for one hour per inch of diameter on its first run to melt the wax evenly.

Question 12

How do I know if my wick is the right size?

Accepted Answer

The right wick size depends on the diameter of your jar and the type of wax you are using, such as soy or paraffin. If the wick is too big, you will get a large flame and soot, while a wick that is too small will struggle to establish a melt pool. You should check the recommended wick sizes for your specific jar diameter to ensure a clean burn.

Candle Making Problems: Questions Answered