Etched Copper with Silicone Mold Stamp Resist

Ursula's Digital Mixed-Media
Stamp from Silicone Molding Putty for Etching Copper

Hi everyone! I am back to etching copper! I decided to play around with creating a stamp from an etching I made on the Silhouette Curio. I’ve blogged about etching on the thin foam before, but I will update with a new post because I am doing something slightly different now and getting cleaner etches I believe. But I digress 😉

In this case I liked the image that I etched and yes it’s true I could have made a “normal” stamp using that image, but I like the texture I get from the foam etchings and wanted a similar feel for this design. So I used 2 part Silicone Molding Putty to press into the etched foam and pick up the design. Then I used that as a stamp to transfer ink onto the surface of the copper and act as a resist. In the video I used different inks and then a surprise twist- embossing powder and show the results. Embossing is a bit tricky- especially on metal so I would only attempt this if you have more of a grungy design and are more of a pro at stamping. Otherwise, just go with the inks 🙂

Here is the video showing the experiment and I also show you my new set up where I am etching with Copper (Cupric) Nitrate.

I forgot to record the tip on keeping the powder from sticking where you don’t want it, but here it is- use corn starch to lightly dust the piece of metal before stamping and embossing!

I’ve mentioned I am using a different solution for etching now. Here is a link to the information I used to set up my bath. There is also another site I’ve used in the past (looks like it has changed recently) but there is still information on electro-etching under the Section titled “For Our Students”. He has a handy calculator to figure out the bath recipe.

Here are some (affiliate) links to Amazon if you are interested in the products I used:

The Cupric Nitrate I used was from the Science Guys on Amazon. It looks like that is currently unavailable, but you might want to search yourself in case it is back in stock.

For the foam sheet I created the “stamp” from I used:

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