404. That’s an error.

The requested URL /bookmarks/mark?op=edit&output=popup&bkmk=http%3A%2F%2Fwww.longrangehunting.com%2Fforums%2Ff37%2Finternal-threading-boring-bar-56801%2F&title=internal+threading%2Fboring+bar was not found on this server. That’s all we know.