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Recipe: Soft Size-base Paint

Before the chemical modification of cellulose and the production of water-soluble cellulose glue, glue-/gelatin-/size-base paints were made from the gelatine and glue-forming tissues that occur in the bones, skins and intestines of animals. Bone glue is a very hard, brittle glue with high adhesive power. For wall paint, skin glue and rabbit-skin glue are more suitable, because they are more elastic. They are first soaked in water, then heated in a water bath and applied warm, because they can only be used when warm.

Processing

Let 120 grams of skin glue soak in 1 liter of cold water for 1-2 hours. Step 1#71: Let 120 grams of skin glue soak in 1 liter of cold water for 1-2 hours.
Heat the soaked glue in a water bath, to a maximum of 60 °C (= 140 °F) - the glue will be less flexible if heated above 60°C. Add about 1.5 kilograms of Chalk from Champagne or 1.5 kilograms of the pigment of your choice to the warm glue and let it soak. Step 2#257: Heat the soaked glue in a water bath, to a maximum of 60 °C (= 140 °F) - the glue will be less flexible if heated above 60°C. Add about 1.5 kilograms of Chalk from Champagne or 1.5 kilograms of the pigment of your choice to the warm glue and let it soak.
Adding a little bit of Linseed Oil Varnish (#73100) will make the gelatin-/glue-/size-base smoother. The paint needs to be used warm, because the glue gels when left to cool. Leftover paint lasts in the refrigerator for a couple of days. Step 3#237: Adding a little bit of Linseed Oil Varnish (#73100) will make the gelatin-/glue-/size-base smoother. The paint needs to be used warm, because the glue gels when left to cool. Leftover paint lasts in the refrigerator for a couple of days.
The calculated spreading rate is about 100 m2/ml. Step 4#49: The calculated spreading rate is about 100 m2/ml.

Ingredients

120 g Hide glue, granules (#63021)
1,5 kg Chalk from Champagne (#58000)
1 l Water
Kremer Linseed Oil Varnish (#73100)

Note

Once soft size-base paint does not gel anymore, if it develops a foul odor or mold, it must not be used anymore!

We assume no liability for the processing instructions described above. In any case, we recommend the production and evaluation of sample surfaces.

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