In casting the substructure for a metal ceramic restoration it is necessary to use:
1- Gypsum-bonded investment
2- Phosphate- bonded investment ***
3- Gas-air torch
4- Crucible, which has not been used for other gold alloy
a- 1 and 3
b- 1 and 4
c- 2 only ***
d- 2 and 3
e- 2 and 4
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Ceramics are very delicate and fragile and can break more easily than other types of materials. Ceramic restoration can solve problems of this type and many others with adhesion treatments and fracture bonding, cleaning, damage repair or reconstruction of lost parts.
The criteria that we apply depend on each piece being able to arrive (at the time of restoring ceramics) to imitative finishes or staying in an archaeological criterion of leaving the cracks seen as witnesses of the passage of time and of the historical avatars that each work of art has suffered.
Ceramic restoration is a specialized profession, which requires a formal education including knowledge of applied chemistry, the handling of specific products for ceramic restoration and a lot of practical experience.
One of the fields in which we have more experience is to restore ceramics of all kinds. Ceramic objects are very varied, generally they have a clay base that is sometimes enameled or not. That is why we are dedicated to restoring We are specialists in restoring porcelain, restoring glazed ceramics, enameled ceramics, restoring cooked or terracotta mud, restoring earthenware, restoring archaeological ceramics, etc.
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Ceramics are very delicate and fragile and can break more easily than other types of materials. Ceramic restoration can solve problems of this type and many others with adhesion treatments and fracture bonding, cleaning, damage repair or reconstruction of lost parts.
The criteria that we apply depend on each piece being able to arrive (at the time of restoring ceramics) to imitative finishes or staying in an archaeological criterion of leaving the cracks seen as witnesses of the passage of time and of the historical avatars that each work of art has suffered.
Ceramic restoration is a specialized profession, which requires a formal education including knowledge of applied chemistry, the handling of specific products for ceramic restoration and a lot of practical experience.
One of the fields in which we have more experience is to restore ceramics of all kinds. Ceramic objects are very varied, generally they have a clay base that is sometimes enameled or not. That is why we are dedicated to restoring We are specialists in restoring porcelain, restoring glazed ceramics, enameled ceramics, restoring cooked or terracotta mud, restoring earthenware, restoring archaeological ceramics, etc.
The cleaning of the pieces, whatever the material, is not in itself a process of restoration, but rather of conservation. The earth, the remains of salts, biological remains and vegetation are a cluster of dirt that although they have contributed during the burial to the conservation of the piece, facing its extraction only represent a nuisance. Cleaning is usually carried out as follows:
- Dry or wet cleaning:
we must clean the ceramic well with dry and / or aqueous methods; brushing is the most common, although there are other mechanical cleaning and chemical cleaning techniques, respectively. For example we have had to perform a type of chemical cleaning by impregnation in a creamy EDTA solution. The result is brilliant!
- Set the fragments:
some pieces may appear broken, fragmented into several pieces or even pulverized. Therefore we will have to protect them first of all with the set, that is, a bandage in situ (in the place of the finding) and consolidate them, giving them strength so that they can withstand the extraction and its subsequent treatments.
- Assembled and glued the pieces:
once cleaned, these pieces can be assembled and glued with adhesives that do not damage the ceramic material. All the products we use in restoration are specific for each type of material!
- Desalting:
an especially important process is the desalination of the piece, that is, the elimination of the salts contained in the object. Without this process, efflorescences of salts on the surface or the fearsome subflorescences could appear, which sometimes cause such pressure that the ceramics jump from where they hide.
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