TERRA SIGILLATA - RAKU
actual pieces are coilbuilt in different technics from grogged German stoneware
clay. They are burnished when leatherhard and covered with thin layers of terra
sigillata. That is a very fine shiny slip also used in ancient history in
which I produce from special clay bodies. After a first biscuit firing
again a second time layers of terra sigillata are
put on followed by a second firing.
the pieces are covered with a slip and glazed. They are fired in a gas kiln with
following reduction in sawdust. With influence of water the glaze crackles away
like an egg-shell, the burnished piece appears again. At least, a thin layer of
beewax is put on the surface. Vessels which should hold liquid are made dense.
call this technic „ VERLORENE GLASUR“ ( Lost glaze).