flat 3D-printable modular splint, segmented into connected rectangular blocks 40x50x2.5mm each. Every block connects ...

flat 3D-printable modular splint, segmented into connected rectangular blocks 40x50x2.5mm each. Every block connects via thin V-shaped living hinges (0.3mm membrane, 90-degree angle) allowing folding like origami into a rigid cylindrical brace. Surface has a grid of round ventilation holes 6mm diameter. One end has an integrated ratchet-lock tongue: a 10x10mm tab with 4 directional saw-teeth (triangle prisms 1mm tall, pointing forward). Opposite end has a rectangular receiver loop with an inner slot 11x4mm and a tiny 0.5mm catch edge. Design is monolithic, single-material, no assembly, no s...