"4-ounce" rockets? What does that mean? How can I make a rocket? Well, if you're interested in the history of the term and some further background information on rockets in general, you can find it in the Introduction to Rockets article. But if you're more interested in getting started, let's go! Specifically, in this project we are going to make a 4-ounce (1/2-inch ID), nozzled, cored, stick-stabilized, black-powder skyrocket with a bag-shell heading. Here's a diagram. You'll see references to it throughout this project. Black Powder Rocket Diagram ...