You prepare a metal plate with a conductive ground (e.g., a hard ground or a photoresist). You then place the plate in an electrolytic bath (usually a saltwater or copper sulfate solution) with a DC power supply. The plate acts as the anode. Electrical current dissolves the metal where it is exposed.
The good news is that the pursuit of that distinctive gravure look —a continuous-tone, painterly image with a rich physical presence—has never been more accessible. Today, a new generation of non-toxic, low-tech, and hybrid processes can replicate, and in some cases surpass, the aesthetic of traditional photogravure. photograv alternative
Now go make your mark.
While traditional gravure has a soft, painterly edge, polymer intaglio has a sharper, more photographic edge. To mimic the soft halation of gravure, artists use diffusion filters during exposure or slightly defocus the UV light source. Part IV: The Hybrid Electroetch (EDM for Printmakers) For those who crave the permanence and feel of a true metal plate (copper or zinc) but recoil from ferric chloride or nitric acid, electrolytic etching (electroetch) is the answer. You prepare a metal plate with a conductive ground (e
You print your digital image as a film positive (on a transparency). You then place the positive directly onto the polymer plate inside a vacuum exposure unit. After exposure, you wash the plate out. That’s it. No darkroom, no enlarger, no film intermediate (if you print a digital positive). Electrical current dissolves the metal where it is exposed
The original Woodburytype (1870s) produced continuous-tone images in a lead mold. Today, you can replicate this using polyurethane resin and a photopolymer relief plate . You expose a polymer plate, wash it out, then use it as a mold to cast polyurethane. The resulting cast has a 3D surface topography exactly matching your image’s tones. When inked relief style (on the raised surfaces) and printed, it produces a continuous-tone image that rivals gravure.