What is part way between a printed circuit board and a rats-nest of point-to-point wiring? We’re not sure, but this is it. [Johan von Konow] has come up with an inspired solution, 3D printing an ...

Conductive filament exists, but it takes more than that to 3D print something like a circuit board ... materials to create his test board. The base layer is printed in regular (non-conductive ...