Very light. Very thin. Aluminum and wire.
Building this kind of sculpture has it’s challenges. Imagining a thing is first and usually the easy part.
There is the cutting and shaping. Then balancing and dropping (sometimes a lot).
They just sit on a balance point. A little air can move them.
A cat can send them flying to the floor in pieces!
There is often a loud noise when the metal hits the floor or table.
Scares the cat!
Good news is the art and cat are usually fine.