Manufacturer and builder 3, 1888
For a dead-black paint for the inside of tubes, use lampblack or artists' boneblack mixed with alcohol in which a few drops of shellac varnish have been mixed. Use no more shellac than will just make the black stick. Make a trial on a piece of metal. If, on drying, it shows the least shining surface, there is too much shellac; if, on the contrary, the black readily rubs of with the timers, there is not enough shellac. A drop of shellac varnish to a tablespoonful of the mixture may change its drying character to a shining or a dead surface. As but a very small quantity of the blacking is needed for an instrument, we cannot readily give the precise quantity.
Coloriasto on väriaiheisten tekstien (ja kuvien) verkkoarkisto
(Archive for colour themed articles and images)
INDEX: coloriasto.net
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