I read about this process with interest in a previous post about one week ago. I have a Spanish, double, with a coin finish, with faux scroll rolled engraving that covers about 90% of the side plates. It is a series of intricate circles similar to that found on older German guns. The problem is that, although an intricate design, it looks rolled.

Has anyone darkened engraving such as this and with what results?

Any suggestions would be appreciated.