If you don’t burn a candle completely evenly, (giving enough burn time for the first burn), that is more specifically what creates tunneling. Not trimming your wick can cause it to tilt or burn irregularly, also contributing to tunneling. It basically means that besides just being kind of ugly, you will also be struggling with wasting wax as a bunch of it sticks to the side and doesn’t burn with the rest!
so why does an untrimmed wick create tunneling in a candle? how does that work? and does it matter, other than looks?
If you don’t burn a candle completely evenly, (giving enough burn time for the first burn), that is more specifically what creates tunneling. Not trimming your wick can cause it to tilt or burn irregularly, also contributing to tunneling. It basically means that besides just being kind of ugly, you will also be struggling with wasting wax as a bunch of it sticks to the side and doesn’t burn with the rest!