Making a hectograph. simple recipes

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FACTORY TECHNOLOGIES AT HOME - SIMPLE RECIPES
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Making a hectograph. Simple recipes and tips

Factory technologies - simple recipes

Directory / Factory technology at home - simple recipes

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For the manufacture of a hectograph, first of all, you need to take the best grade of wood glue, having previously done the following test with it. Take a small piece of glue and dip it in water at room temperature. If the glue dissolves in water, then it is not suitable for making a hectographic mass; if it turns into a gelatinous mass, then the glue is suitable for making a hectograph.

500 g of such wood glue and 1 kg of technical glycerin are dipped into a new tin pot, in which there should not be the slightest presence of fat. First, glycerin is poured and brought by gradual heating to the point where steam rises from it. Then joiner's glue, turned into jelly by the action of water, is lowered into the pot, and the pot is again placed on the stove. Heating continues until the glue is completely dissolved in glycerin with gentle stirring so that air bubbles do not form.

When the heated mass turns yellow, it is poured into a flat zinc box with well-sealed edges 2-2,5 cm high and left to stand on a flat surface until completely cooled, and the hectograph is ready. If during the pouring of the mass from the kettle into the zinc box, bubbles form on the surface of the mass, they can be destroyed by holding a burning torch above them. If the hectographic mass came out too strong and the ink does not stick to it, then the whole mass must be melted again by adding 50-60 g of glycerin. If there is no good wood glue on hand, then it can be replaced with gelatin. To prepare the mass, 2 kg of gelatin is taken, which is dissolved in 3 kg of technical glycerin with the addition of 400 g of powdered talc.

We offer the following recipe for the preparation of a hectographic mass: 500 g of gelatin is dissolved in 3 liters of water when heated, during which 6 kg of technical glycerin and 500 g of barium sulfide powder are added.

Author: Korolev V.A.

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