Developed for filling cracks and small voids and stabilizing knots in very dark woods, this cyanoacrylate glue dries in seconds to an opaque jet black to effectively disguise the repair in the surrounding wood. Alternatively, it is an excellent way to highlight imperfections to create distinctive accents in reclaimed, spalted or burl wood. It also works well for inlay work such as lettering and for bonding dark-colored materials.