3D Printing A Railway Pump Car

A miniature 3D-printed railway pump car, built by Sam Barker and Tom, recreates the classic seesaw-beam handcar mechanism in a compact form small enough to pack into checked luggage and reassemble in a hotel room for the Open Sauce event. Full build files are shared on Printables, though some bolt and shaft details were still incomplete at the time of writing.

Source: https://hackaday.com/2026/08/23/3d-printing-a-railway-pump-car. 8 Sync News only summarizes and links out; content copyright belongs to the authors and original sources.