This section is from the book "Cassell's Cyclopaedia Of Mechanics", by Paul N. Hasluck. Also available from Amazon: Cassell's Cyclopaedia Of Mechanics.
Common glue strongly impregnated with lampblack or vegetable black, or even tine ebony sawdust, is sometimes used for inlaying cheap mandolines. I Slack sealing-wax is also effective. A harder substance closely resembling sealing-wax, known as beaumontage, is made by melting together shellac 3 oz., resin 1 oz.. and beeswax 1/2oz., with sufficient lampblack as required. Roll into sticks. Both substances are run in by pressing against a hot iron. Another useful filling is made by melting together resin 3 parts and wax 1 part with sufficient black to colour. It may be kept in melted condition by gentle heat, and can be pressed where required with chips of wood cut wedge shape.
 
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