A composite node tree changes the 3D rendering into an old-time, copperplate engraving style. You can see this style on paper money from the USA, in Monty Python animations and in very old publications.
You can apply this style to your own 3D art. Included with the nodes is a scene with simple lights and objects, so you can experiment. All content is yours to use as you please.
This is awesome! Thank you so much.