We used this exact same formula / recipe in boy scouts when we
were kids and used HULA HOOPS for gigantic bubbles. We also
stuck the tops of round garbage cans in it and played with the
bubble skin. #science #crosslink #polymer #fibers #boundry #skin
Note: It doesn't have to be Joy - joy just happens to be a very
basic dish soap. Any soap will work. Also you can cut the recipe
down smaller if you need to.