Remember that anything inside the combustion chamber does not last forever. If you have anything with paint, or thin plastic, it will deteriorate very quickly. As for the great stuff (r), that will just burn on the first shot, guaranteed. Plus, epoxy is best, as I am sure you have heard.

Hi, this is my first post on a question about my potato cannon. Upon building my potato gun, tests showed that it was very effective, however, I was wondering if there could possibly be too much space in the combustion chamber, creating less pressure upon ignition. The design is in-line, and the mai...