Just wondering how anyone replicates the sand-oil -grease mixture found around engine terminals that eventually looks like road asphalt (sand-rock-tar).
Ballast is too course, could use sand, but want black.
Will sand stain if an oil based stain (like Minwax) is mixed in?
Has anyone ever used Black Beauty blasting slag? I have heard, but never verified that is a slight magnetic proper to to Black Beauty, at least when to comes to diesel electric traction motors and surely don't want that around if so.