Alum For Marbling

Alum is corrosive and will destroy cloth if not washed out soon.

Alum for marbling.

Methocel or carageenan best waterbased paints. 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. Reserve alum mixture in bin to use over several days. Jmc2 dnf seta jabi.

It bonds readily and permanently to other molecules creating a link between fiber and marbling pigment. Without a mordant the pigments will slide off the paper. Bandanas cotton hankies and even t shirts can be marbled not to mention scarves. Alum aluminum sulphate every sheet of paper to be marbled must be coated with alum.

Soak leather or prewashed fabric in mixture for 20 minutes or brush onto paper. Buy pure aluminum sulfate from an art supply store or online. Wear disposable gloves while treating and marbling the fabric. Plan to marble fabric as quickly as possible after treatment.

Our aim in mordanting is to evenly apply an alum solution to our fabric before marbling just enough for a permanent print. Alum is the third most important substance in marbling after the gall and the size. Mix 3 tablespoons alum per quart of hot tap water in a bin. Stir thoroughly to dissolve the crystals.

Marbling on tragacanth does not requore alum but the paper must be dampened slighly to accept the colour. Fabric scarves ties or other items to marble we used sh silk hankies and mccb mercerized combed cotton broadcloth. It makes the colours adhere to the paper. The alum helps the pigments used in marbling to adhere to the paper.

Mix 3 tablespoons of alum per quart of hot water in one of the buckets. It forms cubic or octahedral crystals that are. Alum or potassium aluminum sulfate is a chemical often used as a food preservative. 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 is a mordant meaning it causes color to set on the paper. Without it the marbling will be faint and blurry. Remember that alum is the compound most commonly used to mordant both fabric and paper. It is sold in a dry crystal form and is soluble in water.

Also sometimes referred to as potassium aluminum sulfate. 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.