This is the way I measure the amount of clay to make beads. It is easier and faster than using the measuring device that comes with the packages
First. a Tri Bead Roller, of course. Second the clay of your choice. Third, a set of circle cutter from Wilton. You can get it at the local craft store in the cake decoration section. It is about $3.oo. We will use the smallest cutter.
Next roll out the sheet of clay at 2nd thickness on the pasta machine. I use Imperia Pasta machine. Keep in mind that different pasta machine has different setting.
Fold the sheet in half, use a roller to press the sheet together.
With the small circle cutter, cut out a piece of clay, roll it to a round shape, then roll it in the bead roller. You should get the perfect, or near perfect shape of beads as shown.
I also use this clay unit for bigger bead roller set. Some require 2 or 3 units. You might need to adjust the thickness accordingly, or find other shape of cutter that will get the same result as mine. The circle cutter I use is 1.5 cm. Diameter.