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All About Aluminum: The Power of Pillars

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Jar candles have become so popular in recent years that many candle makers have forgotten the power of pillars. Pillar candles can add a real touch of beauty to any home decor, as they can offer extremely vibrant colors. Due to the fact that there is no glass blocking, the true color of the candle can be seen with the naked eye.  Aluminum molds are best to create these freestanding candles and are a great investment because aluminum does not rust, so you can enjoy your molds for many years and reduce your expenses!

Selecting your mold can be fun. Candlewic offers many shapes and sizes, depending on the pillar that would best complement your existing line of candles. There are round molds, octagon molds, square molds, plus many other unique shapes in our designer series of polycarbonate molds.


There are two wicking techniques that are most commonly employed when using aluminum molds. You can use the traditional method or the pillar pin method. Both techniques work well depending on the volume of candles produced or the amount of labor available.

The traditional method involves the mold, raw wicking on a spool, a wick bar and a rubber plug. This method is best for lower volume production or in the instance when you want to leave a little length of wick on the candle to attach a bead or a tag. You simply thread the wick through the mold and place a rubber plug into the small hole to hold the wick in place. Place a wick bar across the large opening of the mold, wrap the wick around the bar and pour the wax. After the wax has cooled, the finished product will have the wick nicely centered down the middle of the candle.

The pillar pin method involves a round mold, a pillar pin and a pre-wick assembly. This method is better suited for the small to large production run. Basically, you are making a candle with no wick and inserting a wick after it cools. There are two ways to use the pin. You can either stick the disc part of the pin down into the mold or stick the pin up through the mold from the outside bottom. Pour the wax and let it cool. When you are done, you will have a candle with a hole through the center core and no wick. Take a wick assembly, insert it up through the hole and you are done. The wick will be perfectly centered. The pillar pins are only suited for the round aluminum molds.

When using aluminum molds, here are a few tips and techniques that will help you no matter what your method:

  • Take good care of your molds.  Do not use them for any other use, such as a penholder or a thermometer holder because you may scratch the inside, which will be apparent on the finished candle.
  • By heating or cooling the mold you can achieve different aesthetic qualities to the finished mold.  Cold molds give a primitive appearance, while warm molds may give a good gloss.
  • Keep molds level, unless a desired layered appearance is trying to be obtained.  By resting the mold on various angles, some neat stripes can be achieved. 
  • Take careful not on the pour temperatures.  By adjusting the temperature you can control the shrinkage. Pouring too hot produces more shrinkage and may involve more topping off, while pouring too cool may not give you enough shrinkage, therefore making it difficult to remove the mold.

2 Responses to "All About Aluminum: The Power of Pillars"

Leslie Feign

2:17 AM on September 29, 2017
What causes a "frosted" effect on the top of a candle?

The Candlewic Company

3:57 PM on September 29, 2017
Hi Leslie,

It will depend on the type of wax you are using. In soy wax, that "frost" effect is generally caused by too much fragrance in the wax. If using beeswax, it is commonly called "bloom" and the beeswax "went bad". If this happens in paraffin, it may be that the wax was not poured hot enough. If you let us know which wax you are using and type of candle made, we can help resolve the issue. Frosting can occur with most waxes in some form.

Thank you!
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