In this demonstration, the application tool is a round sponge shape with a flat end, which is mounted on a wooden handle. These sponge tools are very useful in creating round shapes easily and lend themselves to the idea I had in mind as I began.
I first sorted out three sizes of round sponge tools that I had on hand. I then made certain the pot I would be decorating was clean: grease- and dust-free. The third of my preliminary steps was to chose the glazes I would use for the pot.
After waxing the pot's foot, I pour-glazed the interior of the pot with Amaco PC cone six Rutile Blue glaze. I then used the smallest of the round sponge tools to apply spots or dots of wax resist around the pot, just below its rim's circumference, leaving enough room between them so that the spots left by the largest sponge tool would have plenty of room between each other.
As you can see in the photo, in order to leave a perfectly round spot, you need to keep the flat end of the sponge tool perpendicular to the surface you are applying the wax on.