Introduction In my experience, there are three basic machines, which become necessary as one gets deeply into fireworking: a ball mill, a star roller, and a hydraulic press. Ball mills were discussed extensively in Ball Milling 101, and I showed some options for star rollers Tiger Willow Shells in 2-1/2 Days, Day 1. Now it's time to look more deeply at rocket presses. Commercial Rocket Presses In past newsletters I have shown several of my hydraulic presses in action as I've made rockets, comets,...