1ac5c44c_Troubleshooting_Guide__PROBLEM
[POSSIBLE CAUSES] Natural shrinkage while cooling [POSSIBLE SOLUTIONS] Wax naturally expands as it's heated and contracts as it cools. This is totally normal and unavoidable. Try warming the mold or container before pouring. Also, the hotter the pouring temp, the more shrinkage there will be. Poke holes around wick and refill while cooling. This may need to be done several times. [PROBLEM] 
Sink hole in center of candle
Troubleshooting Guide
PROBLEM