Dutch-based Concr3de has proposed an innovative plan to rebuild Notre-Dame Cathedral: combine 3D-printing and the ashes and rubble from the site. Essentially the debris resulting from the fire would be used to create new materials to rebuild the landmark. The concept would certainly be the among the most high-profile applications of 3D-printing tech and Concr3de has already built a gargoyle as proof of concept, using limestone and ash. “We saw the spire collapse and thought we could propose a way to combine the old materials with new technology to help speed up the reconstruction and make a cathedral that is not simply a copy of the original, but rather a cathedral that would show its layered history proudly,” Eric Geboers, the company’s co-founder, tells Dezeen. Find out more there.