Alum Aluminum Sulfate Marbling. Without a mordant the pigments will slide off the paper. Alum is a powdered presoak used to treat fabric or for marbling. Put 1 teaspoon of alum into 1 cup of water.
Of fiber for natural dye baths. It ensures that designs transfer clearly to fabric or paper surfaces.
Without a mordant the pigments will slide off the paper.
Spice rack alum does not work well. Put 1 teaspoon of alum into 1 cup of water. Do not use alum containing potassium ammonium or anything else since these extra chemicals may harm your paper. Fabric will be ready to marble when dry and it may be ironed before marbling.
