Black porcelain vessel

This Tom Kemp piece is an unglazed vessel with a wide mouth and very dark depths made out of black porcelain. In the white underglaze brushstroke one can see the changes in angle and pressure made with the square-edged brush. It is an infinitely variable writing tool, deriving from the traditional middle eastern and western writing tools of reed and quill pens. This stroke was a struggle to maintain as the brush was being used at its maximum angle, which means maximum friction. There is a natural time for each stroke: too slow and it becomes laboured and heavy; too fast and it ends up following Newton's first law of motion, ruining any curves.