Today we'll take a closer look at the sculpture Linda brought to class as an example for her students (right). She used scored line folds or scoring & bending to create dramatic 3-D forms from flat sheet metal.
Scored Line Folds
The idea behind the scored line fold is to weaken the sheet metal where you want to fold it. A quick, low tech way to achieve this is by pressing or hammering hard wire into the sheet. The wire will thin out the sheet metal where it makes contact, creating a line that will bend under pressure after it's annealed. This technique is especially helpful for curved folds.
Shape and secure the wire
Watch as Linda explains how the curve of the wire affects the results, and shows how to secure the wire to the sheet before hammering.
After the wire is curved and taped down, cover your anvil surface or steel bench block with leather and place the piece on top. Using a slightly domed hammer, pound along the wire until it is evenly indented into the metal.
When you've hammered enough, the wire track will be clearly visible on the opposite side but won't have cut through. There is a little trial and error as you learn when to stop. Later if the line you made in this step is slightly too thin for structural integrity, melt some solder along the inside of the fold to reinforce it.
In this clip, Linda cuts around the line left by her wire and bends the piece. Notice how the final form can be manipulated into the shape you want.