Music Trivia: Answer 14

It seems that use of sandpaper during the 18th century is debatable, but the use of dogfish or shark skins was a common practice for the sanding of wood works, like the violin.

Sources: Anthony Hay’s Cabinetmaker, Classic FM, The Dutch Luthier, Popular Woodworking Magazine, and Sandy Tolan’s “Children of Stone: The Power of Music in a Hard Land.”