The weather is now changing and my shop, being a stand alone building, gets cold. I have a kerosine heater that knocks the chill off on those cold mornings. But there is always something in the back of my mind. I always let the shop warm up for a while before I start doing anything because I worry about the cold bits and blades. I worry that the cold steal can shatter and send pieces flying all over the room.

Does anyone else worry about this?. Any thoughts or comments? I know I am probably just worrying about nothing, but it still sticks in the back of my mind.