Kim Schoenberger - J

J - Sgrafitto

A coloured slip is applied to the clay and carved, scratched or incised with a tool to reveal a different colour underneath.

Really Rich Red slip is being applied to the tile.

Before transfering my letter J and carving into the slip I decided to burnished the tile. Burnishing gives a mirror finish to the surface, it can be traced back to ancient civilisations and was used in unglazed low temperature firings as means of partially sealing the pot, but I'm using it for pure aesthetics and experimentation to see how it responds in a high temp firing compared to that of lower temp firing.

Burnishing stones on the left and carving into the tile.

The slip always looks mottley at this stage but it will burn clean in the firing.

Burnished tile and carved...

Photographed on an angle to show the mirror finish resulting from burnishing and polishing off with a soft plastic freezer bag for extra gloss!