In this video, I broke out my hair dryer (I never use it for my hair lol I prefer to air dry!), and that works fine, but an even better tool to have is a heat gun (you can get them on Amazon here). You can also just save some wax from your candles and use the extra to fill in some tops once they are cooled.
So….no need to get too upset about the sink holes in your wax! It’s a pretty simple fix and you don’t need to totally remake the candles 😉
In the video, you can also see that pour temp plays a big role in whether you get sink holes or not. The candle on the left was poured at 150 degrees F, and the candle on the right was poured at 125 degrees. It is going to depend on what soy wax you are using too. I used Ecosoya CB Advanced and you can see that it does better poured at a hotter temperature, while some soy waxes do better poured at a cooler temp.
Hope this helps! Happy Candle Making!