Butterfly Knife

This set of 3D-printable puzzle components 🧩, when deftly assembled, transforms into a sleek training butterfly knife 🦋. The first image displays all precision components, which can be smoothly connected to recreate the counter-rotating handles, pivot pin mechanism, and safety blunted blade. The balanced weight distribution and fluid flipping kinematics demonstrate kinetic artistry, while refining your mechanical coordination during assembly ✨.