It is based on the process explained in http://www.greenart.info/galvetch/contfram.htm and http://steampunkworkshop.com/electroetch.shtml.
Lots of information and very well detailed. I also want to enter in a contest of a famous webpage among hackers (wink, wink) and plan to have a workshop based on this.
Step 1: Warning
The chemicals used, altough not dangerous , can be toxic to certain level.
Be respectful with electricity. She makes no friends.
Metal edges can be point and sharp, do not mess with them.
Step 2: Materials
- Metalic salt (copper sulfate works, but also a mixture of vinegar, water and table salt)
- Metal bar or mesh (as counter electrode)
- Magazine paper (glossy paper)
- Plastic container
- Brass plate
- Laser printer (and only a laser printer, not inkjet nor gutenberg´s printer)
- electric wire and tape
- A paper clip
Step 3: Select and edit image
Your image will have to be in blck and white (old style, old technique, oh well) and reversed, because when you iron it on the brass it will flip, like when you read the image of a book in a mirror.