PARCHMENT AND VELLUM
Due to the nature of the medium, a conservator should be consulted before treatment.
Parchment and vellum are easily distorted, therefore shaping and flattening are necessary. 34)
Restraints should be applied around all the edges. By occasionally releasing pressure at the edges of the restrints, even and safe drying will be ensured.
Once the material is reasonably dry, it can be pressed between blotters for the final stages of the drying process.
If necessary, parchment and vellum may be frozen, but should later be thawed and air dried, not vacuum freeze dried. 35)
Decisions regarding items that can be washed must be made by a conservator.
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