Posted by Stu Smalinskas on May 08, 2008 at 16:41:42:
In Reply to: Etchant for 1018 steel posted by Laura Cerully on April 18, 2008 at 09:03:37:
Are the samples freshly polished? If they sit for any appreciable time, such as overnight, they won't etch due to a thin oxide layer present on the surface.