Organic Printing

Stains:
grass
tea/coffee
curry/tumeric
berry
blood

The Humblefactory - Screen Printing with Coffee!!
Bioplastic, or gooey extender thing for printing http://green-plastics.net/discussion/54-student/84-how-to-make-algae-bioplastic
http://www.youtube.com/watch?v=5M_eDLyfzp8


Formula for a Screen Printing Paste http://www.druckstelle.info/en/siebdruck_rezept.aspx

This formula was developed by the Berlin artist Gernot Bubenik in 1990. It allows printmakers to independently produce a low-cost screen printing base. Bound pigments or tempera and gouache inks may be added. Prints can be overprinted after 15 minutes. You can use this paste for screens up to 120 T.

Ingredients

500 ml water
80 g starch
20 ml glyzerine (80%)
5 g gelatine (pulverized)
50-100 ml shellac wax soap
5-10 drops of clove oil
100 ml methylcellulose glue (viscous)

Eva Pietzcker, screen print with self made inks, 70 x 100 cm, 1995

Instruction

Dissolve the starch in a cup filled with 150 ml of cold water. Pour this into a pot and add 350 ml of cold water. Place it in a bigger pot with boiling water. Stir the heating mixture carefully to produce a thick, translucent liquid. Once the mixture has acquired this consistency, keep stirring for another 5-10 minutes.
Remove the mixture from the water. Pour the glycerine, the gelatine, (previously dissolved in hot water) and 50-100 ml of shellac-wax-soap into it while stirring. Add some drops of clove oil to increase the conservation potential.
When the temperature of the paste is below 60°C, add the warmed methylcellulose glue.
This paste should be stored in the refrigerator. Stir well before use, and add water to obtain the desired consistency.

Shellac Wax Soap

Heat 5 parts (volume) shellac wax (broken up) with 5 parts (volume) of water and one part (volume) Marseille soap until the wax pieces are dissolved and the mixture has acquired a fine creamy consistency. Canauba wax is a useful subsitute for shellac wax and the Marseille soap can be replaced by curd- or olive-oil soap.

http://woodblock.com/encyclopedia/entries/013_02/013_02.html



MICROWAVE: Place 1 tablespoon of wheat starch in a microwave-safe container, add 5 tablespoons of distilled water, stir and place the mixture in a microwave oven. The oven must be very clean. Microwave on a high setting 20 to 30 seconds, remove the paste, and stir. Repeat this process several times until the paste is stiff and translucent. Paste should cool before it is used.
BOIL: While half a pint of water is put to boil in a saucepan, mix in a cup about two teaspoonfuls of rice flour with water, added little by little until a smooth cream is made with no lumps in it. Pour this mixture into the boiling water in the saucepan all at once, and stir well till it boils again, after which it should be left simmering over a small flame for five minutes. When the paste has cooled it should be smooth and almost fluid enough to pour: not stiff like a pudding.
To make starch paste, mix dry starch with enough cold water to make a stiff cream. (A teaspoonful of starch makes a cup of paste). Add boiling water, stirring the while, until the liquid thickens. If it does not thicken, boil it.
Paste is made from rice flour. Fine rice flour is kept in water over night, and with a suitable amount of water it is heated over a slow fire; it needs continuous stirring until it begins to boil. When cooked it finally turns translucent, but just before it turns entirely translucent, while there still remain some whitish parts, it should be taken off the fire. That is the stage in which the starch paste is the strongest. When it becomes too thick it can be diluted with water to a suitable consistency just before using. It should be sufficiently fluid so that it can be poured into another vessel, and when an amount less than the tip of the thumb will adhere to the end of a stick.