Ever had this happen?
Vlad
>I'm using my LV block plane to square up an edge on a very large bench that I'm making for my shop and noticed that the center of the sole immediately behind the blade has changed colour. It's a bluish grey colour. I'm thinking it's a result of heat. I can't imagine anything else. There must be some micro vibrations/chatter between the blade and the sole/frog. My shavings are approx. 10 thou thick. Much thicker than normal. I haven't checked it with a straight edge, but I will. Weird eh??
Vlad (go Ghana - since my Croats have gone home in the FIFA WC)