Thanks Stan

@Wazkelly: thanks for the warning. I think I'll have one try with the brass brush and see what happens. I'll will also use Tungoil to cover the body in a later stage. And if I can not remove the spots I just hope that adding more black will do the trick.

About adding the fountain pen ink to the stampink; will that mix? The fountain pen ink is glycerinebased and the stampink is waterbased...