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Sealing with Shellac and Varnishing Rosewood

Sealing with Shellac and Varnishing Rosewood

by Neil Hebert

Originally published in Guild of American Luthiers Data Sheet #269, 1984 and Big Red Book of American Lutherie, Volume One, 2000



I have been using oil varnish on my instruments for years and have always found the finishing stages to be long and tedious. Still, I find the results of a good rubbed varnish job to be superior to lacquer; it gives the nicest “feel” to the guitar as well as showing the wood to the best advantage.

One of the most ticklish problems in my experience is the seal coat of shellac, especially the first coat. The seal coat must be applied evenly in order to maintain consistent color on rosewood. The resins in the wood tend to wash out over the surface, which can result in irregular staining. I have tried three methods for applying this coat:

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Jack Batts

Jack Batts

An interview by Jeff Feltman

Originally published in American Lutherie #10, 1987 and Big Red Book of American Lutherie Volume One, 2000



You can walk into a clockmaker’s shop and see fifty clocks. One reads 12:00, another says 11:55, another 12:05. Only one can be right, and it probably isn’t a bad guess that none of them is right. Searching for the right varnish is like being in that clock shop.”

“A man could make 150 more violins in his life if he wasn’t so worried about concocting some witches brew. He would do well to spend his time learning to make a fine violin.”

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“1704” Varnish Recipe

“1704” Varnish Recipe

by George Manno

Originally published in American Lutherie #12, 1987 and Big Red Book of American Lutherie Volume One, 2000



The subject of violin varnish and its making has been the topic of great debate and secrecy for the last hundred years. Many makers still spend a great deal of time chasing the elusive dream of coming up with the perfect varnish. Books and manuscripts are filled with endless recipes from the very basic to the most absurd. I have seen some formulas that call for ingredients such as goat urine, sheep bile, gold, and other even more exotic organic extracts that have to be boiled, dried, and then mixed with many different hazardous chemicals. I showed Dr. James Martin, head chemist for Bradshaw and Praeger Shellac Co., one of these more eccentric recipes. His reply to me was, “If you heat these chemicals, you will probably blow your shop to smithereens.” Needless to say, I took his advice.

The varnish recipe described on the preceding page is known throughout the world as “1704”. The recipe came out of the old Wurlitzer shop in the early ’50s. As you can see, the varnish is a simple mixture of seedlac, gum, resin, and oil mixed with alcohol.

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This article is part of our premium web content offered to Guild members. To view this and other web articles, join the Guild of American Luthiers. Members also receive 4 annual issues of American Lutherie and get discounts on products. For details, visit the membership page.

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