Jan Kamphuis makes coloured vases composed out of decorated clay slabs. The first phase consists of decorating, painting plaster plates with engobe. He builds up his decoration with colourful layers. On the dry plaster he brings up a painting that attaches itself to the clay slabs. When the clay is still soft and manageable, he cuts the rag into the desired shape and assembles them to each other. Eventually, the vase objects transparent glazed and fired at 1200 degrees.