Start by measuring your wick. It should be long enough to extend from the bottom of the mold or jar to about two inches above the top. Secure it to the bottom of the mold with a bit of beeswax or use a wick holder. Attach the top of the wick to a wood clothes pin, which can be placed across the top of the jar or mold to keep the wick centered.
Using a double boiler, melt the beeswax over low heat. Beeswax melts at around 145°F (63°C), so keep a close eye on the temperature using a thermometer to avoid overheating. If you’re using a makeshift double boiler, place a heat-safe container (like a glass measuring cup) inside a pot of water, making sure the water doesn’t boil over into the glass cup.
Carefully pour the melted beeswax into your molds or jars, leaving a little space at the top. If your mold or jar is narrow, pour slowly to avoid air bubbles. The wax will begin to harden as it cools, but don’t move the container yet! The most helpful tool in this step is a funnel so you don’t make a huge beeswax mess that is hard to clean.
Allow the candles to cool slowly and naturally at room temperature. Rushing this process can cause cracks in the wax. As the wax cools, it may sink slightly around the wick. If this happens, reheat a small amount of beeswax and pour it on top to fill in the gap.
Once your candles are fully cooled and hardened, trim the wick to about ¼ inch.