Important: Safety Warning
This page describes trade processes that use dangerously toxic materials such as cyanide solutions, mercury amalgams, or strong acids. These processes require training, equipment, and precautions far beyond what the text describes.
This information has been left in for historical purposes but should not be acted upon.
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Liquid Glue
The preparation of liquid glue is based upon the property of the concentrated acid of vinegar and diluted nitric acid to dissolve the gelatine without destroying its cohesive qualities. Dumoulin has given the following receipt: 2285. Dumoulin's Liquid and Unalterable Glue. Take a wide-mouthed bottle, and dissolve in it 8 ounces best glue in 1/22 pint water, by setting it in a vessel of water, and heating until dissolved. Then add slowly 24 ounces strong aqua fortis (nitric acid) 36° Baumé, stirring all the while. Effervescence takes place under generation of nitrous gas.
When all the acid has been added, the liquid which has been previously soaked in water is allowed to cool. Keep it well corked, and for about 24 hours, and a gill of vinegar. it will be ready for use at any moment. This After the whole of the materials have been preparation does not gelatinize, nor undergo brought into a solution, let it once boil up, and strain off the impurities. This glue is well adapted for any work which requires particular strength, and where the joints themselves do not contribute towards the combination of the work; or in small fillets and mouldings, and carved patterns that are to be held on the surface by the glue. 2280. A Strong Glue that will Resist Moisture. Dissolve gum-sandarac and putrefaction or fermentation. It is applicable for many domestic uses, such as mending china, repairing cabinet work, &c.