3D perspective

grabcad

The pin's deceptive appearance from the front suggests a significant depth, yet this is an illusion; it boasts a completely flat rear side, ensuring ease of printing on any device with no angles exceeding 90 degrees. The "stick" within the "D" shape is designed to fit snugly through lapel buttonholes, preventing movement. This innovative pin cleverly combines 2D and 3D elements, demonstrating the power of creativity and 3D printing technology.