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Updated: 14 April 2015
Ding porcelain bowl, with copper-bound mouth rim. The bowl is ivory glazed. There are lotus scrolls on the exterior. There is an inscription on the base.
- Made in: Quyang (county)
- (Asia,China,Hebei (province),Quyang)
- Height: 76 millimetres
- Diameter: 165 millimetres
Inscription PositionOn the base
Inscription Translation(A hall name)
Inscription CommentTwo characters huayuan (a hall name) incised on base
Published PDF date : 12thCRoom 95 label text:
Bowl with copper–bound mouth rim and inscription
The base and foot of both are glazed. Between AD 1086 and AD 1127, Ding potters pioneered the technique of fushao (firing a vessel upside down on its rim). Kiln managers saved on fuel by firing a greater number of pots at one time, stacking them in stepped saggars. The disadvantage was the unglazed mouth rim, cleaned free of glaze to avoid the vessel sticking to the saggar. Craftsmen used sheet copper and occasionally gold or silver, cut to size and heated to fit the rims to hide this flaw. Historical accounts suggest that dressing the rim with metal actually enhanced the status of the clay vessel.
The two-character inscription incised on the base reads華苑 (huayuan).
Stoneware with incised decoration, transparent glaze and copper rim mount
Ding ware 定窯 定窯
Quyang county, Hebei province 河北省, 曲陽縣
Northern Song or Jin dynasty, about AD 1100–1200
13 March 2009
Reason for treatment
Remove metal rim. Dismantle, clean, repair, fill chip.
The object has been repaired in the past, it has an old join that has become very dirty and noticeable. There is also a small chip on the side which has been misplaced and the gaps beside the chip are very dirty. The metal rim on the object has been attached with shellac and there are lots of residues and some staining of shellac on the area beside the rim.
The metal rim was removed with Industrial methylated spirits (ethanol,methanol), the residues of shellac on the object were also removed with IMS. The old join was dismantle after using Nitromors *NITW* acetone soluble (methylene chloride,sodium hydroxide) 3 times, the *NITW* was applied with a paint brush along the join and covered with aluminium foil to decrease evaporation. Once the join was dismantle the Nitromors was removed with cold water. The adhesive on join interfaces was removed with a scalpel. Then the interfaces were steam cleaned.After one week, when the join interfaces were dried, the object was reconstructed by securing with masking tape. Finebond resin was mixed with a small amount of zinc and titanium white and it was applied to the joins, drawn in by capillary action. Excess removed with acetone on a cotton wool swab on a satay stick and a scalpel blade. The small chip was attached with Finebond resin and the small gaps beside the chip were filled with epoxy, fume silica and pigments, once it was dried, the resin was polished with different grades of micromesh.The residues of shellac inside the metal rim were removed with IMS and the inside of the metal rim was coated with a layer of 5% Paraloid B72 (ethyl methacrylate copolymer) in acetone. It was attached to the rim of the object with HMG Paraloid B72 (methyl ethyl methacrlylate) and secured with masking tape. Once it was cured, the masking tape was removed and the excess of adhesive was cleaned with acetone.The surface of the object was cleaned with distilled water and a few drops of Synperonic X, using cotton wool swabs. After cleaning, the surface was rinsed with distilled water on cotton wool. The surface was wiped with a dry Kleenex tissue to remove any remaining distilled water.
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Object reference number: RRC38595
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