Traditionally the decorating slips have been placed solely on leather hard clay which has led some drawbacks. When you dip, pour or paint with engobes on leather hard clay, the clay sucks the water out from the slip. The ceramic product is therefore often soft and difficult to handle.
All our decorating slips can be used on leather hard clay but can also be placed on biscuit fired clay. This means enormous advantages in handling, both in production and when the slips are used in teaching. When using the slips on biscuit fired clay, it would be a good advice to follow some simple rules:
1. Dip biscuit fired objects quickly in clean water before applying the decorating slips. This moistening technique will press out air bubbles from the clay. This will reduce the suction ability on the clay object and the slip adhesion will be improved.
2. The decorating slips needs no additional biscuit firing but can be glazed and burned after a relatively short air drying.
3. Paint the slips on biscuit fired, leather hard or completely dry clay. With our decorating slips you can also paint multiple layers. However, a too thin layer results in a "watery" look and poor colour development. Stir the slips thoroughly before use. Especially bright slips, with lower opacity, can preferably be applied in several layers. A short drying interlayer is necessary.
Decorating slips are not suited for making very small details. For fine dash decor, we can recommend our lead-free underglaze colors.
Our stoneware slip range are warm and intensive in colour development and good melting properties but can also used without applying a glaze on top to create a different surface and colour look.