My girlfriends and I burned the bottoms off of glass bottles last weekend. We saw a picture of them on Pinterest with pillar candles inside. It’s quite pretty actually. We had a good time and were pretty mesmerized by the fire, or possibly the fumes from the acetone. We learned that some bottles are just too thick to be cut. Pelligrino sparkling water glass bottles were the ones that cut best. (Good marketing angle there.) We also learned that you have to use a cheap cotton yarn, nothing fancier than that or it won’t work.
What you need:
Lighter or matches
Acetone nail polish remover
Sink full of ice-cold water
Here is the YouTube video that taught me how to do it. It’s pretty simple to follow. Have fun! YouTube Video Link