Thanks for answering. I did a search on the internet and found that it is available many places. Walmart,Walgreens, BBB, and Amazon. The reviews were mixed from very good to very bad for feet, the intended use. However, almost all indicated that only light pressure can be used or it will stop. They also stated that reading the instructions was very important. Duh...It will be interesting to see how yours works for clay. If it doesn't, you can always go back to feet.
Hope it works,