So after I saw a video about it, I decided to give it a try.
I started out with a cylinder, and chopped out some circles in it. Then I inserted a cube, to make the tags that goes out of the gear. After that, I copied it over, scaled it down, and used the stroke brush to add the chain, and than adjust it to the two gears. I added a new subtool behind it, and made a big gear, and to make all those small tags, was a quite time consuming.. I than carved a hole through it, and continued like that, and eventually I had made the "picture".
I started out with a cylinder, and chopped out some circles in it. Then I inserted a cube, to make the tags that goes out of the gear. After that, I copied it over, scaled it down, and used the stroke brush to add the chain, and than adjust it to the two gears. I added a new subtool behind it, and made a big gear, and to make all those small tags, was a quite time consuming.. I than carved a hole through it, and continued like that, and eventually I had made the "picture".
I'm quite exited about this, because this opens up so many new possibilities inside zbrush!