Wired polymer
Ponsawan Silapiruti has been playing with positive/negative space as she makes wire brooch and pendant forms. " I use bigger gauge wire to make the form, then use smaller wire to wrap around the big wire and in the middle. When I put on a sheet of polymer to fill it up, the clay grabs onto the wire," she explains.
You can see how Ponsawan has progressed with her wire working on her Flickr site and get even more details on her Facebook page. One of the wire forms below became this polymer-filled brooch.