Bottles + Recycling = Free Cups

I saw an article on Lifehacker.com about cutting a glass bottle using only hot water, and well, you know me. I can't resist an easy project with potentially cool results. It took me a few tries, but I finally made something usable. Hopefully, I can scrounge up a few more bottles to practice on, and maybe make a bottle cutting jig, since scoring a round bottle with a glass cutter isn't easy.