Why Does a Candle Tunnel in the Centre?
Candle tunnelling happens when only the wax around the wick melts while the outer wax remains solid. Learn how wick size, candle width and melt-pool formation contribute to this common problem.
Candle tunnelling happens when only the wax around the wick melts while the outer wax remains solid. Learn how wick size, candle width and melt-pool formation contribute to this common problem.