blue plastic tool 3d model

Design a TPU-printable badminton racket grip aid that fits over a standard octagonal badminton handle without copying any existing commercial products. The purpose is to guide a correct forehand “Eastern grip” while still allowing a smooth transition to backhand grips without obstruction. Key requirements: • Fit on top of a standard octagonal badminton racket handle • Slim profile: must not significantly increase total grip size • Material assumed: flexible TPU, 3D-printable, with slight elasticity • Ergonomic design guided by human hand shape, not by existing products Forehand (Eastern Grip) Guidance Features: • A shallow diagonal index-finger ridge that gently guides the index finger toward an angled position (approx. 20–30 degrees upward direction) • A low ergonomic thumb pad area that encourages the thumb to rest naturally without locking it in place • A slight separation cue between the thumb and index finger, formed using organic soft curves — not a rigid wall • Smooth left–right