Bullseye Glass has a wonderful video series that can answer questions about kiln forming, inspire you in your creations, and make you a better glass worker. Their newest video is about using drop out molds to make bowls and other vessels. They help take the mystery out of it. A yearly subscription is a screaming deal at $39. per year. Unlimited viewings. You can’t find a much better deal. Check out their free videos first to get a taste.