Vellum
Hi Bill,
Cotton rag vellum is a specially treated paper and cotton linter product that is water and oil resistant. It retains its strength when wet making it ideal for rolling thin tubes and other spirally built-up cylindrical objects. It is a more difficult to glue due to its water and oil resistance. It does absorb super glue and will make strong but delicate ring like objects when so treated.
-Gil
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