Posted by Laurence Monkhouse on June 24, 2004 at 07:46:42 from 62.253.32.5 user Laurence_.
In Reply to: Re: Scarab's bottom paint posted by Laurence Monkhouse on June 24, 2004 at 07:42:23:
Having got interested I googled it. The Encyclopaedia Britannica defines Black Varnish thus:-
"also called Japan, any of a class of oil varnishes in which bitumen (a mixture of asphaltlike hydrocarbons) replaces the natural gums or resins used as hardeners in clear varnish. Black varnish is widely used as a protective coating for interior and exterior ironwork such as pipework, tanks, stoves, roofing, and marine accessories. The bitumen forms a protective barrier against atmospheric…"