I'd like to run a duct from the intake fan on the bottom of my case to direct the airflow up towards the cpu. i was just wondering what i can use to make the duct out of. i thought about getting the ducting stuff you use for your dryer but its metal and I thought that it might be a bad idea with it being a conductor of electricity and all. any ideas on something else to use or is the metal ducting stuff ok to use?