Cleaning a Bentwood Case
I was given a 1928 Singer 99 in a bentwood case. The machine is a bit rough, but I am sure will come out pretty nice with a lot of work. Since I already have a 15-91 taken apart at the moment, I thought I would start with the case of this little machine. The case isn't in too bad of shape, but is so dirty that it is almost black. What would be the best way to clean this case? I kinda assume that the finish is shellac, am I right in this assumption?