Alum For Marbling

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

Alum for marbling.

It forms cubic or octahedral crystals that are. Alum aluminum sulphate every sheet of paper to be marbled must be coated with alum. It bonds readily and permanently to other molecules creating a link between fiber and marbling pigment. Wear disposable gloves while treating and marbling the fabric.

Make enough solution to cover your fabrics. Plan to marble fabric as quickly as possible after treatment. Stir thoroughly to dissolve the crystals. Fabric scarves ties or other items to marble we used sh silk hankies and mccb mercerized combed cotton broadcloth.

Methocel or carageenan best waterbased paints. Reserve alum mixture in bin to use over several days. 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. Mix 3 tablespoons of alum per quart of hot water in one of the buckets.

Remember that alum is the compound most commonly used to mordant both fabric and paper. The alum helps the pigments used in marbling to adhere to the paper. Our aim in mordanting is to evenly apply an alum solution to our fabric before marbling just enough for a permanent print. The new jacquard marbling colors are the very best but any of the following can be used.

A white crystalline compound used in solution for coating paper prior to marbling for setting dyes on fabrics and other applications. Buy pure aluminum sulfate from an art supply store or online. Soak leather or prewashed fabric in mixture for 20 minutes or brush onto paper. It is sold in a dry crystal form and is soluble in water.

Alum is corrosive and will destroy cloth if not washed out soon. Bandanas cotton hankies and even t shirts can be marbled not to mention scarves. Jmc2 dnf seta jabi. Alum is a mordant meaning it causes color to set on the paper.

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. Mix 3 tablespoons alum per quart of hot tap water in a bin. Marbling on tragacanth does not requore alum but the paper must be dampened slighly to accept the colour. Without a mordant the pigments will slide off the paper.

It makes the colours adhere to the paper. Alum or potassium aluminum sulfate is a chemical often used as a food preservative.