Use Redy Pellet ring sizers to guarantee the size of your metal clay rings. Because metal clay shrinks as it sinters, we have to form the ring larger than we really want it so it can shrink down to the right size during firing.
To guarantee your ring is properly sized, insert a Redy Pellet Ring Sizer inside the shank during firing. The Redy Pellet keeps the ring from shrinking any more than your desired size. For instance, if you want a size 7 ring, you'll choose a size 7 Redy Pellet. The ring itself will be formed larger than size 7 to account for the shrinkage, but you'll always match the Redy Pellet to the ring size you want to wear.