Complex sentence: While the potter was building the coils up, she also deliberate blended them together until there was no trace of the ropes of clay entwined to form the pot, no deviation in the thickness of the walls, and therefore no weaknesses.
Split into simpler sentences: While the potter was building the coils up, she was also deliberate to take the time to blend them together. Once they were blended nicely, there was no trace of the ropes of clay so carefully entwined to form the pot, no deviation in the thickness of the walls, and therefore no weaknesses.