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Treatment; 26 Aug 2002; Clean.Check surface. Remove damaging fills. Tone existing fills to suit.Secure flaking gesso on interior.; Organics
Header
Treatment
26 Aug 2002
Clean.Check surface. Remove damaging fills. Tone existing fills to suit.Secure flaking gesso on interior.
Organics
Reason
Storage
Description
Removal of loose surface particulate matter using vacuuum aspirator and squirrel brush. Removal of ingrained particulate matter using Wishab sponge (vulcanized latex,filler). Stabilise flakes using 15% Primal AC33 (acrylic) on angled and vertical surfaces, plastic drinking straws flexed between a heavy weight and the object held flaking areas in place until the adhesive had set. Strips of Plastazote Polyethelyne foam, 3mm thick, used as seperators between the straws and the original artifact..A primary application of White Spirit (composition variable - petroleum distillate) was used to mask surface and reduce potential for surface staining. Friable red and blue pigment surface was stabilised where necessary using 2.5% Klucel G (hydroxypropyl cellulose) in IMS. A primary application of White Spirit (composition variable - petroleum distillate) was used to mask pigment surface and reduce potential for surface staining. Where possible neat Primal AC33 (acrylic) was applied underneath flakes using melinex spatula. Pronounced contraction of previous AJK dough fill areas was noted particularly in the large concentrations. These fill areas were also raised from the original coffin surface and had been applied in some instances over the original pigment surfaces. Where these characteristics were evident, it was decided to remove these fills. Drop application of acetone and where possible poultices of cotton wool and acetone were used to swell the AJK fill material.On swelling the fill material was then mechanically removed using wooden swab sticks. Some peripheral areas of the loss areas when the fill material was removed needed to be stabilised. A fill material of klucel G and glass microballoons was used to stabilise these unstable loss areas.A primary isolating layer of Japanese tissue was secured to the original underlying surfaces using Klucel G (hydroxypropyl cellulose) W/V in IMS/Acetone prior to fill application. Where large areas of the original underlying substrate of mudplaster were revealed on removal of AJK dough fills appeared marginally stable but necessitated minor stabilisation,they were consolidated using one brush application of 2% Paraloid B72 (ethyl methacrylate copolymer) W/V in IMS/Acetone. The remaining old AJK dough fills were considered aesthetically obtrusive and where not removed the remainder were toned to the red-brown colouration of the underlying mud-plaster substrate using waterbased acrylic Liquitex pigments.
Details
Treatment
1 related objects
coffin
Museum number
EA6710 |
Cultures/periods
x14428
Ptolemaic
|
Findspot
Found/Acquired:
Egypt