Before I start cutting up some steel, I was wondering if such a thing is made. I have my 3 hard drives in their bays and even though the machine is not always in 24/7 I feel that they are getting too hot. There is plenty of room so that I could hang down the middle hd below the bays which would give more airflow around these. So do they make a simple pressed tin part. I have looked in companies like dabs and maplins (UK) without success. I think people dont think about the fluff in their machines. I have taken to regularly blowing out the fans as the build up is astonishing (also considering I have no carpet).