This video shares the story behind Exphand Prosthetics, founded by Kate, who designs 3D‑printed prosthetics for children that adapt as they grow. It outlines how the idea began during her university dissertation, inspired by a young girl needing a better‑designed prosthetic. The video highlights the benefits of 3D printing, including lightweight structures, custom colours and built‑in joints, and explains how components can adjust in length and width or be swapped for a perfect fit. It also shows how incubator support, SOLIDWORKS visualisation and rapid design iteration have been crucial in developing and preparing the product for launch.