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To repair cracks and structural damage that threatened the stability of the plaster. To remove layers of grime consisting of candle wax and soot that had been deposited by the burning of candles in the chapel for 500 years. To remove repainting by previous restorers that attempted to counteract the effects of soot and other accretions.
The oldest method, known as the a massello technique, involves cutting the wall and removing a considerable part of it together with both layers of plaster and the fresco painting itself. The stacco technique, on the other hand, involves removing only the preparatory layer of plaster, called the arriccio together with the painted surface.
[4]: p.81 There are two methods to removing rivets: the 'cut' and 'pull'. The 'cut' method consists of cutting the rivets through the middle with a file and then pulled out. The 'pull' method involves placing a thin blade under the rivet and pushing out any plaster packing. This method uses leverage to pull the rivet from the ceramic piece.
Water is used as the vehicle for the dry-powder pigment to merge with the plaster, and with the setting of the plaster, the painting becomes an integral part of the wall. The word fresco ( Italian : affresco ) is derived from the Italian adjective fresco meaning "fresh", and may thus be contrasted with fresco-secco or secco mural painting ...
The aging of a paintings supports and ground will also impact the paint layer. For example, cracks can form in a gesso ground due to the embrittlement and movement of its support, then become visible in the paint film. [22] Tempera can develop cracks over time that are visible to the naked eye, and flaking caused by air bubbles.
Paint remover is applied to an aircraft's landing gear during an inspection looking for cracks in the aluminum. Paint stripper or paint remover is a chemical product designed to remove paint, finishes, and coatings, while also cleaning the underlying surface. Chemical paint removers are advantageous because they act on any kind of geometry and ...