This is how I finish my walnut Scroll Basses. The wood is chosen specifically for its straight grain, and the overall color and styling theme is to look like it was made in the 1940's. Your Grandpa would have played it proudly in a Swing Jazz band. If he had an amp....
It's actually a fairly simple finish, all done with Varathane Ultimate Water-Base Polyurethane. Dark brown-tinted base coats to sink into the open grain, sanded back. I deliberately don't fill the grain up to the surface, leaving some grain texture. Then several coats of poly with a small percentage of dark brown tint. Some light sanding to deliberately make the color patchy, as if it had been rubbed on. More coats of dark-tinted poly around the perimeter, making a subtle sunburst. The thin pinlines around the edges are made by gently filing a tiny bevel through the color coats. Then two or three light coats of clear over everything. Lightly level sanded and buffed up to a semi-gloss.
The neck gets the same treatment. It looks like old walnut, with decades of hand-rubbed finish on it. That's the idea.
It's actually a fairly simple finish, all done with Varathane Ultimate Water-Base Polyurethane. Dark brown-tinted base coats to sink into the open grain, sanded back. I deliberately don't fill the grain up to the surface, leaving some grain texture. Then several coats of poly with a small percentage of dark brown tint. Some light sanding to deliberately make the color patchy, as if it had been rubbed on. More coats of dark-tinted poly around the perimeter, making a subtle sunburst. The thin pinlines around the edges are made by gently filing a tiny bevel through the color coats. Then two or three light coats of clear over everything. Lightly level sanded and buffed up to a semi-gloss.
The neck gets the same treatment. It looks like old walnut, with decades of hand-rubbed finish on it. That's the idea.


