You can hammer your own copper backsplash without using torches or heat. All you will need is a sheet of plywood, some towels, a ball peen hammer and a sheet of 24-gauge copper. You should get a sheet of copper that is at least a foot larger on each side than the area that you wish to cover with the copper backsplash, because the metal will withdraw a bit as you hammer it.
Set your plywood on the ground or on a very sturdy table, and lay several layers of towels on top. Lay your copper sheet on top of the towels. Wear gloves to protect your hands as you hammer your copper backsplash, since chips and shards of copper amy become airborne easily. Nail the corner of the copper sheet to the plywood to help prevent the copper sheet from bowing upwards.
Pounding Your Copper Backsplash
Once you have your work area ready and the copper backsplash ready to hammer, you will simply pound the copper sheet with your ball peen hammer. The harder you pound, the greater the indentation will be. If you hit lightly, then the indentation will be barely noticeable.
You can vary the strength of each hit, to create a texture that varies in size and depth. It will take a lot of hammering to cover your sheet completely with texture, and you may have to hammer a bit at a time over several days. If you get too tired, do not overwork yourself, take a break and resume your work once your arms have rested.
If you wish to have different shapes, you can use almost any material to create your texture. Hitting a wooden spoon with your ball peen hammer will create an oval texture, while hitting a tin can will create circles in your design. When using other items than a ball peen hammer, you will want to hit lightly so as not to tear a hole in your copper backsplash.
You should never use glass, ceramic or porcelain items to create your backsplash texture as these can break easily. Items that are sturdy and do not break, would be ideal for the texture of your copper.
If you wish to have a texture for your copper backsplash that is more uniform than random dents, you can hammer your copper on top of surfaces that have a uniform texture already.
Hammering on top of concrete will create a nice grainy texture, whereas hammering on top of rocks would create a wild texture that really stands out. Sand would be another good medium to hammer your copper backsplash on and it would create a texture that resembles sandpaper.
Hanging Your Copper Backsplash
Once you have completed the hammering of your copper backsplash, you will want to cut it down to size removing all excess copper. Nail this to your wall using standard nails, while covering the edges with copper trim.
If you cannot locate copper trim, you can fold the edges of your copper backsplash back to eliminate the sharp edge. Hammer the edges until they are smooth and then use copper nails to attach the backsplash to your wall. This will create a nice, smooth edge that is very attractive for any decor.
Once you have hammered your copper backsplash in place, you can then create an antique look by applying antiquing stain or paint. Apply the stain or paint, and then wipe lightly with a soft cloth. The indentations will stay darker as the outer copper is cleaned, creating a nice aged look for your backsplash.