Making these buttons is a bit addictive. Here’s a few more experiments. The black, in the black and red one, is no. 8 perl cotton, which was a little too thin for this. The blue used no. 5 perl, which was much easier, and faster, to work with, and I wove this like a spider web, rather than wrapping each spoke.
To give an idea of size, each button is about 1 inch (2.5 cm.) in diameter.