Don't turn the bowl upside down until the folded towel is in place. It may slide out on its own when you tip it over. Another method to try is immersing the ceramic bowl and plate into hot, soapy ...
It’s not often we see slip-cast ceramic molding, though ... wanted custom water bowls for his dogs, one of whom is clearly a grumpy Ewok. The design started with a 3D-print of the final vessel ...