While the wire cogs look great there still not strong enough to use in a sculptural piece. They are a successful exercise in observation and work brillinatly as a "drawing" of the cogs.
These cogs are made from a light flexible plastic (a copy cover) and I used wire to connect them together. I think the plastic is a really effective material to work with. It allows you to make the teeth of the cog really precise and fit together well. I think if i replace the wire with plastic this would work well.