Object name: Cypriot krater
Dimensions: 237 mm x 270mm
Age: Iron Age
Description: Beige coloured krater with dark brown, geometrical slip decoration.
The ceramic was extremely fragile. Due to salt contamination the surface of around 65% of the rim and shoulder was lost or flaking off. The remaining 35% of the rim were broken into eight pieces. The foot of the ceramic appeared stable, but had a small chip.
There were surface deposits of sinter and possibly salts, as well as a white bloom on the foot of the ceramic.
The ceramic was consolidated with a 5% solution of Paraloid B72 (acrylic resin) in acetone and flakes lifting off the surface were stabilised with Paraloid B72 drops along the edges. Particularly fragile areas were protected by a facing of spider tissue (type of Japanese tissue paper) applied with a 5% solution of Paraloid B72 in acetone.
After stabilising the ceramic was desalinated in de-ionised water baths over the period of one week (you can read about this stage of the treatment here). After completion of the desalination process the ceramic was dried in a controlled way underneath a Polythene sheet.
The broken off pieces were re-adhered with HMG B72, a readily available acrylic resin adhesive.
The ceramic was consolidated a second time with Paraloid B72 in acetone (2.5%). To protect big flakes from lifting off the surface they were back filled and the edges sealed with a mixture of microballoons and Paraloid B72 in acetone (40%). The gap-fills were retouched using acrylic paint.