In this exciting DIY tutorial, learn how to make a marble machine from cardboard with step-by-step guidance. Discover the ...

JOE:'Today's Dengineer is nine-year-old Ocean from Essex.' OCEAN:I need help from the Dengineers because I love to design and make marble runs and rollercoasters but I don't have the space to do it.

Most Christmas ornaments just hang there and look pretty. [Sean Hodgins] decided to whip up something altogether fancier and more mechanical. It’s a real working marble machine that hangs from the ...