Hi, I would like to know how critical the cooling ramp is (the last step in cerematization). I have a furnace which doesnt have active cooling. So, it takes a while to cool off. Is it OK or can it lead to warping? I had pretty severe warping in my sample. I welcome any suggestions as to how I can overcome this problem. Thanks. Regards, Pramod Kolar 90291, Ph: 919-660-5118 (Off) Duke University, 919-383-2587 (Res) Durham,NC 27708 919-660-5293 (Fax)