Double Reverse Method – mosaic lime bed detail double reverse method –or, the “Ravenna Method”, reverse cartoon tracing is transferred onto a lime bed and tesserae (tiles) are placed directly into the lime. When mosaic is complete cheesecloth is glued to the mosaic with a water-soluable glue, traditionally rabbit skin glue. When dry the mosaic is lifted out of the lime, the back is cleaned and then adhered to a final substrate. This method allows a great amount of flexibility, changes are easily made.
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