Full/Semi Auto Mini Marshmallow Gun - Compressed Air - 1 Week Classroom Project

cults3d

This is a tutorial on how to create and assemble a marshmallow gun using 3D printing and other materials. The author provides a detailed guide on how to conduct this project over the course of five half-days, including: 1. Introduction to new students: The first day, new students are introduced to 3D printing, Onshape, and CAD in general with a separate slide deck. 2. Tutorial sessions: For the rest of the week, each afternoon session begins with a 20-minute tutorial on an important skill, concept, or new tool before releasing students to continue working on their projects. 3. Supervision: Students are pulled aside one at a time and supervised building their air tanks to ensure they are built safely. 4. Battle Plan: After a few days, students test their first prototypes of their marshmallow guns, and then on the last day, arrange a massive battle. The author also provides information on the skills learned during this project, which include: * CAD * Onshape * Voltage * Current * Capacitance * Resistance * Basic circuitry * Preparation Additionally, the author recommends purchasing 10% extra of all parts in case some students' air tanks end up leaky or some of the solenoid valves don't work properly. They also recommend allocating three medium-large printers per every two students to ensure everybody gets everything printed by the end of the week. The tutorial concludes with two types of instructions for assembling the marshmallow gun: a tank assembly tutorial in the form of a YouTube video, and a traditional instruction manual that includes a schematic diagram of the selectable firing mode wiring.