Eggcopter

grabcad

The first drop test at 4.5+ meters proved a total success! The egg's first flight is now safe. Moving on to the second drop test with a height of 13.6 meters, which also resulted in success. Check out the new video showcasing the process here: https://youtu.be/uzMLbDz-Gms. New STL files for blades and other modified parts are available in the "New_mod" folder. The main purpose of this innovative design is not to lower the fall speed, but rather to evenly distribute the load on the eggshell in a specific direction upon impact with a surface. The blades serve to ensure strict vertical falling and impact the ground at the desired point within the container's vertical axis. With radial load distribution on the eggshell, it can withstand tens of kilograms! This concept was inspired by childhood science programs that demonstrated the strength of an egg when evenly distributed radial pressure was applied. The assembly instructions for this project can be found in this video: https://youtu.be/WnM7fjeB0Gs. For printing, ABS is recommended with a resolution of 0.20 layer, 0.4 nozzle, 0.33 width, and 3 perimeters, along with 4 bottom and top layers. Infill should be set at 25% (90-100% for parts #12 and #6). Rafts are not needed, but some parts with rafts can be found in the "Arrange_or_rafts" folder. Support is also not necessary. Flexible parts were printed using thermoplastic elastomer (TPE) filament, which provides elastic properties. The 3M blue scotch tape was used on the hotbed for these parts. All parts were successfully printed on the self-made SquareBOT 3D Printer (ver.5), and you can check it out too!