Alum For Marbling

Alum is the third most important substance in marbling after the gall and the size.

Alum for marbling.

Soak leather or prewashed fabric in mixture for 20 minutes or brush onto paper. Our aim in mordanting is to evenly apply an alum solution to our fabric before marbling just enough for a permanent print. Wear disposable gloves while treating and marbling the fabric. It makes the colours adhere to the paper.

Without a mordant the pigments will slide off the paper. Mix 3 tablespoons of alum per quart of hot water in one of the buckets. Jmc2 dnf seta jabi. Also sometimes referred to as potassium aluminum sulfate.

Without it the marbling will be faint and blurry. To make enough alum for several dozen sheets of paper stir 1 tbsp 15 ml alum into 1 cups 360 ml warm water until completely dissolved at least two minutes. Alum aluminum sulphate every sheet of paper to be marbled must be coated with alum. Plan to marble fabric as quickly as possible after treatment.

Stir thoroughly to dissolve the crystals. Make enough solution to cover your fabrics. Fabric scarves ties or other items to marble we used sh silk hankies and mccb mercerized combed cotton broadcloth. Reserve alum mixture in bin to use over several days.

The alum helps the pigments used in marbling to adhere to the paper. The new jacquard marbling colors are the very best but any of the following can be used. Bandanas cotton hankies and even t shirts can be marbled not to mention scarves. Remember that alum is the compound most commonly used to mordant both fabric and paper.

Alum or potassium aluminum sulfate is a chemical often used as a food preservative. Marbling on tragacanth does not requore alum but the paper must be dampened slighly to accept the colour. It acts as a color binder or mordant fixing the colors to the paper permanently if alum is not applied to the paper before marbling most of the color will rinse off. Alum is corrosive and will destroy cloth if not washed out soon.

Al 2 so 4 3 k 2 so 4 24h 2 o this product looses 18 h 2 o at 92 5 o c and becomes anhydrous at 200 o c. It is sold in a dry crystal form and is soluble in water. It forms cubic or octahedral crystals that are. It bonds readily and permanently to other molecules creating a link between fiber and marbling pigment.

Buy pure aluminum sulfate from an art supply store or online. Mix 3 tablespoons alum per quart of hot tap water in a bin.