Originally Posted by upcyclejosh
Anyhow, the wax starts out cooling normally and then 'warps' after the outer portions cool and draws the center inward and tilts the wick to 45 degrees!
As lsg says, you need these to hold the wick centered and taut when making container candles. https://www.candlescience.com/equipment/wick-bar
But that isn't the only issue.
Taper candles are generally made of mostly straight paraffin wax. Paraffin shrinks more when cooling than practically any substance. What you are seeing is normal. Typically when you use this sort of wax to make pillar candles you would do one or more re-pours to eliminate the sink hole, and you even need to poke holes when the wax from the initial pour is almost cool to avoid having air pockets form inside the candles.
However, this kind of wax is not used to make container candles because of the shrinkage and melting properties. There is a special kind of straight paraffin (scale wax) that can be used for containers, though it still needs a re-pour to level it out. http://www.candlewic.com/store/produ...-Fill-Wax---CF
Much more common is to use special container blends. With the blends on this page you can often make a candle with a single wax pour. https://www.candlescience.com/wax/pa...-and-tealights
Do not try to use a hair dryer to melt wax or level the top of a container candle. With most of them the airflow is not nearly hot enough and is way too fast, so that any wax you melt is liable to splatter. For candle work you need a heat gun like this. https://www.amazon.com/Wagner-050300...dp/B00004TUCV/