Importance of temperature
While a Realtor might say location, location and location is what sells a property, a Candle Maker would have to say temperature, temperature and temperature is what makes a good candle. While many other factors contribute to the quality of a finished candle, the importance of temperature cannot be overstated.
Recommended pouring temperatures should always be followed for each of the products being used. The temperature of the wax should always be measured in the pouring pot prior to pouring your candle. The temperature of the wax can change when poured into the pouring pot, or when scent is added or even by the time you finish pouring the candle so do not always rely on the temperature in your wax melter (if using a different tank).
You may also want to check to see if there are other options available for pouring the waxes. For example the recommend pouring temperature for a wax such as the CBL-129 is 170 to 185 degrees Fahrenheit. In some instances, better results can also be achieved by pouring this wax hotter. There may be other issues such as increased shrinkage and color changes, but it may be something worth pursuing.
The second temperature variable is the temperature of the mold or container that the wax is being poured into. In most instances, the best results are achieved by preheating the mold or container to some level, with a general rule of “warm to the touch.” The precise temperature level will be determined by the product, room temperature and your pouring temperature.
Heating to about 100 degrees Fahrenheit should be sufficient with everything except some of the special effect natural waxes (F Wax and G wax).
The final variable is the room temperature. This will vary across the United States. Some candle makers have to contend with high humidity where others contend with dry heat and others extreme cold. The important issue is to recognize this as a variable and compensate where possible. For example, if the work area is very cold you may have to preheat your mold container more and pour at a higher temperature.
For best results, everything should be measured by weight, including fragrance. This allows for more consistent results. Unfortunately, teaspoons and tablespoons are not always reliable. When you use an effective additive such as vybar, being off a little bit can dramatically affect the results of the candle.
While most candle makers learn this early on, it is still important to note that the fragrance should always be the last thing added to the wax just before pouring.