DOI Seite / Zitierlink:
https://doi.org/10.11588/diglit.21832#0108
Anna Kłosowska, Michał Obarzanowski • Plaster casts in the collection.
Fig. 8. Tomb of king
Ladislaus Jagiełło,
panel of tomb chest.
Inv. no. mnk i-g-86.
Back side of the object
with damaged wooden
support.
Photo by Michał
Obarzanowski
Typical damage as a result of prolonged water activity was observed on several objects.
It is obvious that on some occasions, water had been dripping on the cast's surface
for a long time, as it had hollowed out deep, distinctive cavities (fig. 9).
Due to the specific relative humidity and temperature conditions in storage rooms,
microbiological corrosion appeared on some objects (fig. 10). Species of fungi
(Chaetomium globosum, Chaetomium murorum and Mortierella sp.), identified
by Dr A. Chlebicki from the Mycology Department, Institute of Botany, Polish
Academy of Sciences, suggest that the collection must have been flooded by the sew-
age system as well. A great majority of the casts did not present signs of previous
renovations, although some had been treated in a simple and provisional way, which
in the long term proved to be a dubious and potentially dangerous procedure.
For example, overpainting soiled surfaces instead of cleaning them, using irremov-
able, penetrating paint, negligent plaster fillings and repairs.
Conservation treatment
The conservation treatment varied according to the state of preservation of the
particular objects, and their manufacture technique.
Thorough cleaning of the surface was the first step of the conservation treatment.
It had to be completely safe for the object's surface and relatively quick in terms
of time planned during the Project. The cleaning methods were chosen after exten-
sive tests, including many kinds of materials and methods, such as different kinds
of rubbers, micro sandblasting with very fine abrasives, for example, potato starch
107
Fig. 8. Tomb of king
Ladislaus Jagiełło,
panel of tomb chest.
Inv. no. mnk i-g-86.
Back side of the object
with damaged wooden
support.
Photo by Michał
Obarzanowski
Typical damage as a result of prolonged water activity was observed on several objects.
It is obvious that on some occasions, water had been dripping on the cast's surface
for a long time, as it had hollowed out deep, distinctive cavities (fig. 9).
Due to the specific relative humidity and temperature conditions in storage rooms,
microbiological corrosion appeared on some objects (fig. 10). Species of fungi
(Chaetomium globosum, Chaetomium murorum and Mortierella sp.), identified
by Dr A. Chlebicki from the Mycology Department, Institute of Botany, Polish
Academy of Sciences, suggest that the collection must have been flooded by the sew-
age system as well. A great majority of the casts did not present signs of previous
renovations, although some had been treated in a simple and provisional way, which
in the long term proved to be a dubious and potentially dangerous procedure.
For example, overpainting soiled surfaces instead of cleaning them, using irremov-
able, penetrating paint, negligent plaster fillings and repairs.
Conservation treatment
The conservation treatment varied according to the state of preservation of the
particular objects, and their manufacture technique.
Thorough cleaning of the surface was the first step of the conservation treatment.
It had to be completely safe for the object's surface and relatively quick in terms
of time planned during the Project. The cleaning methods were chosen after exten-
sive tests, including many kinds of materials and methods, such as different kinds
of rubbers, micro sandblasting with very fine abrasives, for example, potato starch
107