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leafcasting

n. ~ Conservation · A technique to replace missing parts of paper with freshly cast paper.

Notes: 

The damaged leaf is supported on a screen. Water containing pulp in suspension is pulled through the screen, filling up the missing area.

Citations:
(Roberts and Etherington 1982) For certain kinds of materials, particularly those of large format, e.g., newspapers and maps, leafcasting is a much more efficient and economical method of repair than the traditional manual methods. Its use can also strengthen the entire leaf, as leafcasting not only fills in the holes but also fills cracks, joins fragments, repairs margins and may also be used to provide linings. In contrast to hand repairs, these procedures have the additional advantage of requiring little or no use of adhesives.