Studio Saturday is taking a short break this week. Please enjoy this previously published blog post from our sister site, Artist’s Network! ~ Jeannine
No doubt you use metal in your mixed-media art—we all love a rusty key in a collage—but have you worked that metal? Today’s Studio Saturday is all about metal embossing, which is easier than it looks, a lot of fun, and guarantees great results.
An embossed metal piece can stand on its own, or be incorporated in mixed-media art so many ways: in collage and assemblage, as a pendant, as an embellishment on a book cover, or to enhance a handmade frame. You’ll need a few relatively inexpensive tools to get started, which is another big plus.
Let’s start with the metal itself. I used a sheet of medium-weight copper metal from Amaco ArtEmboss, which has a thickness of 5 mil, about 10 times thicker than the tin foil you have in your kitchen. It’s sturdy stuff, but also nicely malleable. You can cut it with scissors, but I wouldn’t use good fabric scissors (the ones your mom always yelled at you for using); any decent pair of scissors will work. You’ll need a paper stump and a couple of styluses, with tips in different sizes. I used a set meant for shaping paper, but there are also specific metal embossing tools available. You should also have two surfaces to work on, one hard and one soft. I used a glass cutting mat, and also a piece of thin craft foam. And you’ll need a plastic stencil, (preferably one that’s not too detailed), and some low-tack tape (I used washi tape). Optional and not pictured here are modeling paste and a palette knife.
Decide what size piece you want to make, and cut the metal about 1″ larger in height and width. Tape the edges if they’re sharp or jagged, and tape the stencil to the metal, making sure it’s firmly in place. By the way, this a great way to extend the use of your stencils. And please note that at Cloth Paper Scissors Central, we do not clean our stencils.
Place the piece stencil-side down on your hard surface, and burnish the design with the paper stump. Make sure you can see the entire design. While working, I flip the piece over to make sure I’m getting everything.
With the stencil still in place, go over the design from the back with a small-tipped stylus. Outline each piece of the design, pushing the stylus right up to the edge and really defining the shape. If the stylus slips outside the lines, don’t worry—we’ll fix that later.
Flip the piece over and you’ll see that the design is starting to become dimensional. But since you’ve been working on a hard surface, it’s flat on top.
Place the foam sheet on top of your hard surface and the metal piece on top, stencil-side down. Using a stylus with a larger tip, go over the designs again, pressing fairly hard. This process stretches the metal and rounds it. You don’t want to stretch it so much that it tears, but this metal is fairly heavy, so you can get some pretty good height. Note the difference in the four petals that have been embossed on the hard surface, versus on the foam.
Work the entire design, then remove the stencil. The metal embossing should be pretty prominent at this stage, but the edges won’t be that defined. To make them more defined, place the metal right-side up on the hard surface, and run the small-tipped stylus around the outline of each design element. This will create edges and also flatten the piece, which has probably become a little domed due to the embossing. To flatten the piece more, use the paper stump to gently push the metal down.
Note the difference below between the design on the left, which has defined edges, and the one on the right, which still looks a little blobby.
As you continue work on the piece, continue flipping it from the right to the wrong side, and from the hard to the soft surface. When flattening and defining the piece, work on the hard surface. When embossing, use the foam. Take your time and refine the design, emphasizing the shapes, flattening, and edging. Use the paper stump to gently flatten any stray lines or marks. If your hand gets tired, take a break. The nice thing about metal embossing is that you don’t have to worry about anything drying out or not being workable after a certain point. You can leave it and go back to it anytime.
At this point you can add some details to the piece. I pressed the small-tipped stylus into the motifs, creating little dots. You can also create free-form swirls, lines, or add other designs. Keep in mind that since metal is shiny, sometimes it’s difficult to see details. Move the piece around to make sure you’re seeing all the hills and valleys accurately. Also, I like to cut a small piece of metal to practice on or try out designs.
Metal embossing is all about creating interest through texture, dimension, and color or patina. I didn’t want the entire piece to be smooth and shiny, so I marked off a border around the piece and between the motifs. Then I sanded that area, using 220-grit sandpaper, and wiped off the metal dust with a baby wipe. In addition to adding texture, sanding also helps camouflage any errant lines or mistakes. I used a permanent pen to mark the borders, and those lines can be removed with alcohol.
I decided to stipple the background, creating little dots with the small-tipped stylus, and pressing from the front (with the foam surface underneath) to create little depressions. Try different techniques on your practice piece to see what you like. When I stipple I first create some wavy lines, and then fill in around them—I find this easier and less tedious than just creating random dots. You can also see below that the lines themselves create an interesting pattern—you don’t have to fill in the entire space.
When the stippling was done I wiped off the drawn borders, turned the piece over with the wrong side facing up, and ran the paper stump gently around the inside of each motif square, which raised it up a bit.
At this point you can call it done, or add some color. I decided to add a little heat patina by holding a heat tool over the motifs for a few minutes. Make sure you do this in a well-ventilated space, place the metal on a heat-proof surface, and don’t handle the metal while you’re heating it.
Other options are adding a patina, which can be done with various chemicals, formulas, and paints and rubs. Vintaj Patinas come in a wide range of colors and are easy to use, as are alcohol-based inks. Treatments like liver of sulfur will turn copper a dark brown, but it can be buffed and/or sanded to reveal highlights. Make sure you finish every part of the patina process before the next step.
Although the metal is quite tough, the embossed portions can still be dented. I like to fill in the raised portions with molding paste, which is available in most art and craft supply stores and dries as hard as a rock. Fill the spaces with paste, using a palette knife, even off the back, and let dry. If you’re left with any high spots, sand them off.
To finish the piece, I cut a piece of chipboard a little smaller than the metal and wrapped the metal around it, trimming the corners like you would on a package. As you manipulate metal it becomes what’s called work hardened; if you have trouble wrapping the metal, use a bone folder to fold it around the chipboard.
I then attached it to a slightly larger piece of chipboard that I covered with handmade paper.
The piece is now ready for hanging! I’ve already got more ideas that I can’t wait to get started on. If you’re intrigued by working with metal, take a look through the resources below—they’ll fast track you to success.
I’ll be back next week with a fun project that will bring lots of color into your life!