Hello All,
The origin of these pieces with the swirls is unknown at this point in time. The pondering always seems to go along the same lines, whether through conversation, or on discussion boards, but no-one has found anything to give a full and indisputable attribution.
The idea of Dial Art is indeed interesting (and new), but they started appearing before Dial Art made their pieces - which as far as I know were only vases of one shape and form.
Nigel