The marbling paints sink to the bottom of the tray.
Alum recipe for marbling.
Stir for 2 or 3 minutes till the alum is dissolved.
It makes the colours adhere to the paper.
Let pigment spread out 2 to 3 inches.
Lay a sheet of paper on the surface of this alum water.
Marbling colors are too thick.
Let the alum dissolve then soak the fabric for 20 minutes.
Buy pure aluminum sulfate from an art supply store or online.
Corn starch in 1 2 cup cold water.
A 20 x 26 will hold approximately 2 gallons of water.
Directions for fabric marbling.
1lb of alum 24 tablespoons of alum.
The reasons behind this i have not been able to find out but it might historicaly have something to do with.
Marbling on tragacanth does not requore alum but the paper must be dampened slighly to accept the colour.
Add another color dropping paint into middle of previous color if desired.
Mark one side of your watercolor paper with an a and use a sponge brush to apply alum solution evenly to that side of the paper.
If you marble on the wrong side the pigments will not properly adhere to the paper.
Mix 3 tablespoons alum per 1 quart of hot water.
You can do this the night before.
1lb alum 3 gallons of alum mixture.
Put one third cup of alum into one gallon of water or you can cut this recipe in half.
1 gallon of water to 8 tablespoons 1 3 cup of alum.
Alum is the third most important substance in marbling after the gall and the size.
Hang to completely dry before marbling.
Dissolve 2 tsp alum in 3 4 cup water.
Continue in this fashion adding color over color and letting paint spread out and form random shapes.
The trick to adhering the paint to fabric is presoaking the fabric in alum.
Pour this mixture into a large marbling tray.
In recent posts i ve looked into the types of alum and the quantity necessary for marbling paper.
With a coffee stirrer drop paint onto several spots on surface of size.
Add 1 teaspoon of methocel methocelulose powder per gallon of solution or throw out and start a new recipe.
Now let s turn to fabric marbling.
Make a double recipe of liquid starch by dissolving 4 tbs.
In this case you should apply the alum by the soaking method.
The size might be too thin or old.
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.
There are a lot of different recipes for mordanting fabric prior to marbling but with my natural dyeing experience to guide me i d like to share my method.
The recipe we use for the alum is.