Lithophanes
Lithophane making is a very old technique where porcelain is fired to transparency (around 1250 Centigrade) having been poured into a very thin mould. Very small variations in the mould create a shadow pattern in the porcelain. It is quite a challenging technique to get right, but the use of 3D printing to create the moulds brings some exciting opportunities to modern day ceramicists practising slipcasting.
We start with a photograph