Originally Posted by Daryl Hallquist
I remember Dr. Gaddy discussing a test he did. He made two rectangular pieces of steel, then color case hardened them. He put one piece in a window sill and the other in a drawer or similar. After an extended period of time, he put them side by side. There was no difference in color.

Thanks, Daryl. I did not remember that. If it satisfied Dr. Gaddy I'm comfortable with that, too. Amazing though, how old wives' tales can persist.

May God bless America and those who defend her.