3D Printed Catapult

As an assignment for Engineering 1000 here at UConn, we were tasked with designing a catapult with a price constraint of ~$12.40.

Here was my initial design, which aimed to use a stepper motor to wind back the arm for full auto firing.

Here’s one side of the final design, rendered in SolidWorks

At roughly 5¢ a gram for filament, my design was kept within our price limitations.

Printing successfully on my Replicator 2

Partially assembled, with a randomly toothed gear to see if it fit on the motor.

Unfortunately, as it turned out, the stepper motors we were allowed to use from the provided arduino kit were far too weak for my design to successfully implement it an aim of the project was to keep the Bill of Materials low, and automation was a secondary goal, so instead of opting to buy better stepper motors I decided to turn it in as is.

Automation Design

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