The challenge
As a personal project, I created a paper catapult art-toy using a laser-cut fabrication process.
The role
I did the form analysis, concept sketches, digital modeling, and physical fabrication.
The process
I got inspired by the Japanese rhino-beetle. This bug uses his horn to fight with other males, and by a form analysis and biometry, I designed the catapult using the beetle's horn movement. Through several iterations, I tested different sizes and mechanisms, assembly tolerances, and materials.
The conclusions
I had fun creating this project. The biggest challenge was finding the perfect assembly tolerances to join the pieces together. During the laser-cut process, the laser beam consumes 0.2 millimeters of material, so I need to re-sized the assembly mechanism from 3 millimeters to 2.8 millimeters.
From the beginning, MDF wood was my first choice. Even so, I tried to use red acrylic to bring an aesthetic appeal. But, the material did not hold the dynamic tensions and ends breaking easily.
