Description:
This is a technical grade of gelatin made in the U.S. It is a fine mesh granular gelatin that is easy to dissolve in water. The technical grade means that it is the lightest in color and most translucsent grade available. This makes it ideal for use in gilding. Gelatin is preferred by many professional gilders over hide glue, because it can take a super burnish easier than hide glue when mixed with gilder's clay or gesso.
First soaked in water and then heated in a water bath, it is applied warm, and gels when left to cool. In gilding, it is used as an adhesive for metal leaf, such as gold leaf. It is mixed with gilder's clay or gilder's whiting. Always make the minimum concentration required; as a guide, a set jelly should be somewhere between hard set and liquid. For gilding, mix 40 grams of gelatin for every quart of water.
Specifications
Bloom: 240 - 280 grams
The bloom measurement refers to the elasticity of a gelatinous mass. The higher the number the greater the elasticity.
Viscosity: 140 - 160 millipascal seconds
The millipascal seconds is a measurement of viscosity which is measured by the flow velocity of the glue solution through a funnel.Distemper Paint Recipe
Hide glue and gelatine both provide a low cost, easily formulated paint which is called distemper. Diluted with water, it is good for color sketching, as well as for painting. Distemper paintings have lasted for centuries without change.
Ingredients
1 part hide glue (dry)
10 parts water
- Leave the glue in water overnight or for a full day.
- Let the glue absorb as much water as it can, then pour off the excess water.
- Warm this swollen glue buy surrounding the container with hot tap water. This will cause it to melt. All hide glues should never be heated over 140° F.
How to Use
Work the dry pigments with water into a heavy paste with a pallete knife. Then grind the pigment into the warm solution of glue. Keep the paints warm enough to remain in solution while painting with them, and use warm water to dilute them. Use a bristle brush for painting, applying the paint in thin layers to glue-sized paper, cardboard, panel, or canvas. This method is excellent for alla prima painting and for thin underpainting. To harden and preserve the paint film, spray the dried painting with a 10% solution of water and alum.
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