Formulas and how-to

Simmone Simnchini gum print

Gum Diazo Printing v1.4

Writers / Maurizio Pizzigoni, Salvatore Abate and Simone Simoncini Research / Mr. Travis Pugh Photography / Simone Simoncini The present paper aims to be a reference guide to anyone in the EU willing to go on printing with pigmented gum while being fully compliant with the actual safety regulations regarding chemical substances (i.e. avoid the use of dichromate, illegal as of September … Read more

Photo intaglio test plate and print

How Carol Hayman works with photo intaglio plates

There are many variations to how artists work with their processes, here Carol Hayman describes her process when working with photo intaglio plates – also called photo etching and photogravure. Writer and photography / Carol Hayman My journey with polymer plates is a path along with the evolution of technology – the plates, transparencies, copy machines, PhotoShop, and digital cameras. … Read more

Pipettes and syringes for measuring drop sizes

Is your drop the same size as mine?

Have you ever wondered if the size of a drop is always the same? The short answer to the question of the size of a drop is that the volume of a drop usually does vary, in fact depending on 10 different factors. This is of course relevant to alt. proc. because recipes often specify “20 drops”, “20 gtt” or … Read more

Chlorophyll prigment print by Almundena Romero

Chlorophyll printing and pigments

Chlorophyll printing is a sustainable photographic process using plants and pigments to develop a print or a cameraless photogram. Almudena Romero shares her knowledge of the process. Writer and photography / Almudena Romero Since the 1840s, artists have used organic techniques to produce photographs, sometimes using flowers, as is the case in anthotype printing, and sometimes by blocking or exposing … Read more

Figure 13: Assembly Pins into the paper Registration Strips

Gum print registration

Instructions to register gum prints. Gum bichromate printing requires multiple pass to get the right density both for black and white and color prints. Here is how. Writer and photography / Andrea Baldi A reliable registration system is helpful to get multiple layers of the gum prints that do not show any misalignment in the different passes. For example, when … Read more

An intaglio press in Hervé Sachy's studio.

Chrome free Copperplate photogravure process

Hervé Sachy has been working with Copper photogravure etchings for over 40 years, but was, due to the ban of dichromate forced to find a new way to do etchings. This resulted in a chrome free copper photogravure process – better for both the artist and the environment. Writer and photography / Hervé Sachy Hervé Sachy, who has lived in … Read more