lego catapult 3d model

Functional compact catapult designed to launch a standard LEGO minifigure. Must fit entirely within 150mm x 150mm x 150mm. The design must be fully 3D-printable using only printed plastic, with no metal, rubber, glue, magnets, or external components. No screws or fasteners; use only print-in-place or snap-fit joints. The catapult should have a stable triangular base with a wide footprint for balance, a single throwing arm with a pivot axle, and an integrated cup sized to securely hold a LEGO minifigure. Energy storage must come from a simple printed flexure (bending arm) or torsional beam. Include a simple locking trigger mechanism that holds tension and releases cleanly. The design should launch forward (not upward), with smooth motion and proper clearances between moving parts. Ensure strong, durable geometry with no thin fragile sections, and maintain balance for consistent repeatable launches. Keep the design simple, practical, and realistic—avoid complex mechanisms or futuristic shapes. Use a clean, m