GUM ARABIC


Gum arabic is a natural gum obtained from the sap of acacia


trees, particularly Acacia senegal. It dissolves in water to form a viscous solution that dries to a thin, flexible film. In hat making, it is used as a light stiffener, especially for straw and delicate fabric hats, where a strong shellac-based stiffener would be too harsh. Gum arabic provides body and surface smoothness without creating brittleness.


Stiffening tip for felt from the 1950s:


Rub a dry candle over the


places needed for stiffening, then press with a warm iron over a damp cloth.


GELATINE Gelatine is a protein-based


substance derived from collagen, usually from animal sources. It dissolves in hot water to form a jelly-like solution which dries to a clear, stiff film. In hat making it has been used to stiffen straw and light fabrics, particularly where waterproofing and shape retention


are required. Although less common than shellac in modern production, gelatine remains in use for


traditional straw hat work because


of its gentle action and compatibility with natural fibres.


Registered charity number 1153487 (England and Wales) SC046840 (Scotland). Company limited by guarantee number 08570737. © the hat magazine


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