This is my first attempt at making a steel nozzle out of stock steel material and a lathe. As of right now I do not have any immediate uses for the part, but some hydrostatic testing with this nozzle would be quite interesting. The convergent section follows a 45º half angle, followed by a 30º half angle, leading to a ~0.2″ throat, which then leads to the divergent section with a 45º half angle. This is not at all optimized for anything and no exact dimensions were followed. The tools used were also not the most recent additions to our engineering lab, consisting of a ~60 year old lathe with a grinded down cutting edge and dull drill bits. Overall this little project was a fun experience and I am planning on making an official schematic and getting smaller stock material that could fit on the rocket motors I am currently experimenting with just to see what kind of improvements can be made with just the nozzle.