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