Ariel Harush is an engineering student at Israel’s Ben Gurion University. He 3D-printed a radio connector for a friend in the IDF and suddenly army commanders were asking for 1,000 of them. He and 400 volunteers have since printed 43,000 items, from knee pads to night-vision rifle adaptors.
https://nocamels.com/2024/03/volunteer-engineer-is-3d-printing-kit-for-israeli-troops-at-war/