[Johnie] built himself a CNC woodburner powered by the sun. Like the solar 3D printer we saw last summer, [Johnie]’s build uses a giant Fresnel lens to focus sunlight onto a piece of wood.

Most CNC mills offer three axes of freedom, but he only had a 2D mill meant for routing PCBs ... [Johan] discovered that it would be necessary to cut the wood stock from eight different angles ...