After 18 hrs

Sustainable Plant Proteins as a Less-toxic Alternative to the Gum-bichromate Process

The ferric-lupin process was developed by Peter Friedrichsen and to some extent the naming follows the convention of gum bichromate (the sensitizer and colloid form part of the name) but instead, utilizing a sustainable plant-based protein. It can be hardened in several ways, here Peter follows the less toxic CHIBA system. Writer and photography / Peter Friedrichsen In this article, I am going to explain how one can use plant … Read more

Cuprotype by Jim Patterson

Cuprotype history from 1850s until present

A Cuprotype is a photographic print of Copper II Ferrocyanide on paper or fabric. Jim Patterson gives us a history of the Cuprotype process. Writer / Jim Patterson with help from Niranjan Patel, Peter Friedrichsen, Frank Gorga, and Alberto Novo Photography / Jim Patterson, Peter Friedrichsen, Alberto Novo, Niranjan Patel and Frank Gorga A Cuprotype is a photographic print of Copper II Ferrocyanide on paper or fabric. Cuprum = copper … Read more