Ring Launcher Project

This is an ultra-low-budget foam ring-launching STEM project. It has a range of about 5ft (2m) and is perfectly safe as the ring is foam. This was originally designed to inspire STEM learning through hands-on workshops with elementary to middle school age children. With a total unit cost of $1.39 and allowing students to learn hands-on about motors, batteries, electricity, and physics, it is my hope to spread STEM learning and education.

The main parts of the launcher are 3D printed: “Part A” and “Part B”. Part A is the base and includes an integrated motor mount, battery holder with spring, and some cutouts. Part B is where the rings are stored and the guide for the ring while launching. They are held together with two zip-ties on opposite sides.

Ring Assembly Instructions:

Cut a 55mm diameter pool noodle into ½" slices. If you are having trouble or are making these in bulk, you can print the 4 Slice Ring Jig to help. Just align the pool noodle to the end of the arrow, and u