THE PHOTOPOLYMERGRAVURE... The techniques of the photopolymergravure is too long to explain on this site... It's a quite new technique, invented by a dane - Eli Ponsaing around 1989.. It uses polymer plates from the grafic industry, and are nontoxic!! GREAT!! basically it is quite a simple technique, but on the other hand, it requires a lot of practict to master... The technique is explained in every detail on a great site, made of Kari Holopainen from Finland. Try his site... http://www.uiah.fi/~teofilus/ or search on his name on yahoo.com HAVE FUN...