If one of the intervening states was a superpower, a civil war is a further 72% longer; a conflict such as the Angolan Civil War, in which there is two-sided foreign intervention, including by a superpower (actually, two superpowers in the case of Angola), would be 538% longer on average than a civil war without any international intervention.
Shellac is a wood finishing product made by dissolving dried resin in denatured alcohol. Shellac was used heavily for finishing furniture during the 19th and early 20th centuries, and it is still available for use today. The product is popular due to its ease of application, low odor, and all-natural origin.
Apply the solvent with a rag to loosen the shellac/lacquer from the wood surface, then lightly scrape the residual finish with a plastic putty knife. 3. Removing finish with chemical strippers: Good for polyurethane (acrylic), varnish, and paint. Photo: shearerpainting.com.. Removing finish with solvents: Good for shellac and lacquer. Photo: rockler.com. Shellac and lacquer are alcohol-based finishes, which can be removed with a variety of solvents that are available from your neighborhood hardware store. Shellac can be removed with denatured alcohol.