Semi-dry Pressing In semi-dry pressing, the proportion of water in the starting clay
is typically in the range 10% to 15%. This results in low plasticity, precluding the use
of plastic forming methods which require a very plastic clay. Semi-dry pressing uses high
pressure to overcome the material's low plasticity and force it to flow into a die cavity,
as depicted in Figure 17.7. Flash is often formed due to excess clay being squeezed between
the die sections.