3D-Printed Collapsible Katana

What’s cooler than a regular katana? One that hides in its handle and extends like a lightsaber. After seeing an example of this awesome collapsible katana design at a convention, Maker David Miao printed a copy of it at home on his Prusa XL 3D printer. He made it look even better by printing it with Fixdry’s tri-color PLA, which gives it a rainbow sheen.