Project #27: Etching on Copper
I am pretty excited about this week’s creative project. I recently started taking another Enameling on Metal class at the Torpedo Factory and I had all these grand plans for my projects this semester. I wanted to make the most of it and hopefully come out with enough pieces to sell on Etsy. If the pieces sold well, then I would really push working more with metals and trying to make a real business out of it. Unfortunately I was counting on certain techniques (mainly etching) being used in class and when I asked my teacher about it she said we would not be doing any etching in class this semester. I decided to do the etching step at home and then bring my pieces into class to enamel (since I can’t afford a kiln at the moment).
Unfortunately the search for ferric chloride (the etchant we used in class and that is commonly used to create circuit boards) was futile. According to my teacher and loads of websites, Radioshack was the only place you could buy ferric chloride, however they have stopped selling it and I needed to look for another solution, or order it online. When searching for ferric chloride I came upon the Stop using Ferric Chloride etchant! (A better etching solution.) tutorial on instructables.com that suggests using hydrogen peroxide and muriatic acid (pool acid) instead. Supposedly you can keep using the same solution over and over again which makes it more environmentally friendly.
I tried out this technique and am pretty happy with the results. I need to work on a better resist since the acid ate through some parts where it was too thin. The only downside is I had to buy two gallons of muriatic acid and only used around 1/2 cup. Luckily it was only $10.
Below are some photos of the process. To see more details you can check out the rest of the photos from this project and other creative projects here.
Step 5: Brush with baking soda to neutralize.









