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Treatment; 12 Apr 1991; Remove from box. Remove plaster fillings. Clean. Remove coating as possible. Secure laminations. Remove number near bottom.; Stone, Wall Paintings, Mosaics

Header: Treatment; 12 Apr 1991; Remove from box. Remove plaster fillings. Clean. Remove coating as possible. Secure laminations. Remove number near bottom.; Stone, Wall Paintings, Mosaics
Reason: Temporary Exhibition
Description: The modern case was removed, the plaster was carefully cut away with hammer, chisel and scalpel. The loose dowels were now removed and the stela removed from the box. The laminations were consolidated, as most areas were senstive to staining by aqueous solvents, this was carried by injection of a co-polymer Paraloid B72 20% in acetone with fumed silica applied under the surface with a syringe. Modest staining still occured. The borders of laminations were secured with a filling of Paraloid B72, 10% in acetone/IMS and microcell glass balls applied with a spatula. These were coloured with acrylic paints. The dirt on the surface with Wishab foam sponge and vacuumed. The hieroglyphs were cleaned carefully by loosening the dirt with a wooden cocktail stick and brushing with a sable brush. Tests with solvents to the stained modern coating produced additional staining around the edges and surface loss. Therefore, stains were concealed with dry powder pigments applied with a brush. The dowel holes were filled with Paraloid B72 10% in acetone/IMS and microcell glass balls applied with a spatula. These fills were coloured with acrylic paints.
Details: Treatment