In the Depths
Corroded Copper 21 x 38 cm
Electrolytic action on copper
In the Depths
Corroded Copper 21 x 38 cm
Electrolytic action on copper
1/2 June 2017
This workshop will teach two etching processes that can be used to etch at home or in a classroom situation, these are saline sulphate and electro-etching.
Both processes have been described as being ‘safe etching’ however in this workshop we will focus on their potential for alternative mark making rather than on their non-toxic credentials. Don Braisby who is teaching the workshop is completing his doctoral thesis on electro-etching.
Non-members £120.00/Members £75.00
Booking essential (via email or telephone)
telephone: 01978 267629
Completed table top sculpture (59cm x 16cm). References Jasper Johns Light Bulb series. The apple and pear are floating on a copper base that is an electrotype copy of a piece of rusted iron that I have been saving for making another object in the same series.
An old lump of concrete that looks like it has spent many years in the sea was found on Abergele beach. Its colours and texture make it a natural fit with this electroformed pear.
Although the starting place for the research was focused on electro-etching for printmaking the use of electrolysis in making sculptural 3D objects is becoming an area of interest for me, especially after the visit to the Castle Fine Art Forge.
The research journey has been an interesting one. For me there has been a fusion of the research and the making of objects each process informing the other. In my artist statement I describe the idea of the two journeys, the inner and outer that I believe happen in the making of art objects. This could be mistaken as meaning that my work is process driven, that is the creative journey is more important than the product. In the production of this object the narratives of all three are important and are fused into it. The narratives of the two journeys, and the two objects that are now one, encompass constant change. As an art object it is a still life and as such is a reminder of death in life.
My research programme is moving into territory that is more satisfying and familiar to me. At last I’m beginning to make work again. Having explored and become familiar with the technology of electro-etching I can now play with its mark making potential. It is possible to etch plates in the traditional manner by replacing acid with electrolysis but that would be limiting its potential. The major difference between it and acid etching is that metal can be added to the plates with electro-etch.The plate making process is more akin to building a collagraph.
This copper plate was produced by both plating and etching so it can be both intaglio and relief inked. The plate is also a piece of art in its own right.
Steel facing a copper plate was used in the past to protect a soft copper plate so that more prints could be taken from it. Although the number of editions are not large enough to require steel plating I thought it would be fun to see if it could be done at low voltage. I’m sure it can but I didn’t manage it at first try but I did get some interesting marks. The colours were also amazing as the mild steel started to rust on the copper.
The first image is of the plate as it came out of the tank, the second and third are as it was cleaned up.The third image shows some of the bare areas where the mild steel has not adhered properly. Although the lack of adherence is a significant failure, due to inadequate degreasing, the marks it makes are hypnotic. If I can achieve these colours in a print I’m going to be well pleased.
My research into electro-etching is based on the following testable assumptions that:
The objectives are to:
The aim is to:
In earlier scoping research for this project research saline sulphate was identified as a possible alternative mordant to nitric acid for etching. It is widely used and recommended as a safe mordant for etching zinc and aluminium (Wray). Ferric chloride was also considered, but rejected in the early part of the programme, owing to the difficulty of using it in a domestic environment. The benchmark that had been set for assessing an alternative mordent was that it should be inexpensive, safe and convenient for use in a home-based studio.
The conclusion of the research project was that saline sulphate could be considered as an alternative to, but not necessarily a replacement for acid etching or ferric chloride etching.
The major advantage saline sulphate has over nitric acid is that it does not require as many safety precautions. It does however share some of the disadvantages of both nitric acid and ferric chloride:
In 1991, Nik Semenoff at a conference, at the University of Saskatchewan in Canada, both described and encouraged artists to use electro-etching as a safe process to etch intaglio plates. It is a matter of surprise, that despite the fact that Nik made this claim twenty-five years ago, and the work of Marion and Omri Behr, Cedric Green, Alfonso Crujera, Bob Perkin and others have shown that his claims are valid, electro-etching is not in mainstream practice.
Current writing on electro-etching
Marion and Omri Behr (1993) published their research into the etching and tone creation in copper and zinc by means of a low voltage electrolytic process using the salts of the same metal as the electrolyte.
Cedric Green, working in France on an electrolytic process for etching copper and zinc he published his paper on galvanic etching in 1998, he has an active web site on which he publishes his and others artwork and researches into electro-etching and electrotyping. Cedric has recently added papers to his web site describing his concerns about the use of sodium chloride as an electrolyte because of its potential to release chlorine gas.
Alfonso Crujera an internationally respected Spanish painter, sculptor and printmaker began electro-etching in 2001 and opened the first electro-etching workshop in Spain in 2002. He published his ‘Electro-Etching Handbook’ in Spanish that has now been translated and published in English. Alfonso has an active website and runs residential workshops. He also has an easy to read, accessible paper on electro-etching on the non-toxic print website. Most recently Alfonso, in collaboration with Bob Perkin a U.K. based scientist, has been writing of their research into the science of electro-etching.
In 2010 Francisco Hernandez-Chevarria and Alberto Murillo published their paper “Metal Sacrifice: The use of saline (sodium chloride or table salt) to etch aluminium, steel and iron/mild steel.
Where am I at with this Project?
I guess the flip answer to that question is I wish I knew. I’ve probably learned more about myself than I have about the subject matter so far.
I am surrounded by a load of data; notes on experiments and ideas to explore further, but at a time in the PhD. Programme where I need to start pulling it all together into a coherent form and making some work. The making of work has been somewhat on hold over the past two years, so that is beginning to look like a priority. Using the making of art as a research tool.
 Howard, K. (1993). ‘Safe Etching and Photo Etching: The next generation’. Print Making Today, Vol. 2 No 3. pp. 19-21
 Same metal same metal salt describes the use of the same metal for both the anode electrode and cathode and the electrolyte being an aqueous solution of the metal salt i.e. an electrolyte of copper sulphate for copper electrodes and zinc sulphate for zinc electrodes.
 Wray, P. (2007) ‘Etching Made Easy’, Printmaking Today Vol 16, No 1 Spring, pp 25-25
 Semenoff, N and Christos, C. (1991) Using Dry Copier Toners and Electro-Etching on Intaglio Plates Leonardo, Vol. 24, No. 4 (1991), pp. 389-394.
 Electro-etching handbook: Alfonso Crujera: 9788493510091
 Printmaking Revolution – Amazon.com