Quote Originally Posted by D. Sanders View Post
I've seen white/bare lines like that on blue jobs where all the oil wasn't removed. I'm betting that there was a touch of cutting fluid left in those holes. It doesn't take but a microscopic amount to do something like that.
That was my suspicion as well once I thought it over. There had to be some contaminant preventing the bluing from adhering. It just floors me that they'd send out a barrel in that condition.