mechanical gears 3d model

"Design a high-fidelity, print-in-place mechanical fidget toy consisting of 6 interlocking herringbone gears aligned in a linear, slim rectangular frame. Mechanical Specs: Use a helical gear profile with a 20-degree pressure angle to ensure smooth, silent rotation. Each gear must have a central axis pin integrated into the outer frame with a 0.3mm vertical and horizontal clearance to prevent fusing during FDM printing. Aesthetic Features: The frame should have a skeletonized, 'industrial-tech' look with rounded ergonomic edges for handheld comfort. The top surface of each gear should feature a recessed 'vortex' texture to provide grip for the thumb. Output Requirements: Optimized for a 256x256mm build plate (Bambu Lab standard). The final form factor should be approximately 120mm x 30mm x 10mm. Include a 4mm lanyard hole at the base for EDC (Everyday Carry) attachment."