Condition different colors of clay to get sheets in the widest setting of the pasta machine.
Pick one of the sheets of clay prepared in the step above and use a cutter to get the same quantity of material for each of the pieces. In this tutorial we have used a round cutter 24mm wide (the smallest of the round cutter box), but you can try using different cutter shapes and sizes to find the one that works better.
Make a ball with each piece of clay and then roll it with your finger just in the center. The ball will slowly became a hourglass-shaped piece. It's better to watch the process in this video:
Repeat the process with all the sheets of different colors of clay to get all the pieces needed for the bracelet. Bake them.
Once baked you have all the pieces to assemble the bracelet.
Thread the elastic yarn in each of the pieces you want to use. When the bracelet has the desired length (you can test it in your wrist), make a double knot and leave yarn enough before cutting it. With this excess of yarn, thread again the clay pieces to reinforce the bracelet. When there's no more thread make another double knot and the bracelet is finished.