Reply To: Thickness of Blech Home › Forums › Shabbos! › Thickness of Blech › Reply To: Thickness of Blech March 18, 2015 12:25 am at 12:25 am #1065702 hakohen53Participant Mod 29: I like your idea, but what do you mean that the cookie sheet is insulated? Don’t think I ever heard of that before.