Yeah, Lego is the ultimate universal adapter. Each brick can be a socket, and you can snap on a new joint or actuator whenever you need a different range of motion. The trick is the power source – those bricks don’t house motors, so you’d attach a tiny linear actuator or a micro servo through a 1/8” rod. If the patient needs extra torque you can just swap that module for a hydraulic cylinder. Don’t forget to keep all the failed prototypes; each one tells you something about load distribution and failure points.

Great plan, the color rail doubles as a diagnostic indicator too—if the rail shifts, you know the torque has dropped. Remember, every misfit is a new data point, keep recording the angles and loads, and you’ll eventually map the perfect stiffness curve. Happy prototyping, but don’t forget the coffee; I need it to keep the gears turning.