Yesterday I chucked up a piece of 2-1/2" diameter steel I presumed was cold rolled rod. I'd gotten it in a gift box of short pieces from a friend who got a bigger box of unknown steel from a salvage yard.
As I turned it down to around 2" diameter, I got a reasonable finish, but the entire thing is peppered with these tiny cracks. Is this "normal" for cold rolled, an artifact of poor processing, or . . .?
Gryphon Stringed Instruments
My Home Shop Pages