In which I slip cast a plate
I took a one piece plaster plate mould and built up a coil collar about a centimetre above the highest point and a centimetre away from the edge of the mould.
I poured slip into the mould and left it for about 15/20 minutes. The plaster absorbs water. As the water flows to the plaster, it pulls clay particles to the plaster wall and they concentrate there.
I poured out the slip and left it for about another 15/20 minutes.
I cut away most of the excess slip and lifted it and the coil away.
I left the slip in the mould for an hour and a half, trimmed it further and then simply turned it out to get a moulding that could support its own weight but was still distinctly wet and flexible. I stored it in a plastic bag to regulate the drying process and will check back on it tomorrow.
The plate will model an idea for tutorials and does not have to be perfect. I believe that the mould is normally a push mould requiring a second part, but the slip casting is quick and suits my purpose here well, leaving a wet, flexible, workable shape that can be worked further.
