Cardboard is one of the easiest ways to build something physical, far easier than the 3D printing and laser cutting we usually write about here.

A US Star Wars fan has built his own lightsaber using a blue laser powerful enough to cut through paper, card and tape.

[Shane] made a project that speaks directly to our heart — combining laser cutting, cardboard, and gears. How could it be any better? Well, it could do anything. But that’s quibbling. I… ...