Andy Scott's Metal Process

When thinking about how the metal tree structure could be constructed i thought back to Andy Scott's metalwork sculptures.  He constructs his forms not out of solid metal or pure metal sheet but small bits of metal welded together.  This means that it is easier to work with and shape which would come in handy as a tree is quite a complex form.  Although his structures also have holes in them as part of the style but that could be a practical solution to aid the ivy growing up the tree.