This delicate technique prevails land sealed using non-calcareous clays white paste with grain sizes of grog thin or absent.

Stages of shaping and finishing are critical for the success of the building, in fact poorly finished objects give rise to defects ingobbio vitrification. For this we may want to round the edges and picketing finely objects.

The first step of the ground constitute the sealed bottom for the next steps and will have to be of the same type of clay which is fashioned with the piece it is necessary that the cooking temperature is microporous.

The Earth is sealed clay, much improved and covered with a beautiful “paint” coral, orange or brown leather, paint to define a colored pottery with slips vitrifying. These special coatings are obtained by separating the part clay and coarser from the colloid.

Generally they choose ferrous clays very high in sodium and potassium plastic (clay Montelupo or the land of Valencia).

rain water, sodium salts and clay are the ingredients to obtain a land sealed: After drying the clay crumbles finely, in a possibly transparent container disband about 5 grams of calgon in a liter of water, we will introduce the clay and after an energetic mixed the leave to settle for 8 hours.