There was a thread some time back about cooling the motor but I don't think it got to the problem or at least the problem in my case. The cyclone will be totally enclosed, no filters and exhausting to atmosphere. Given that the cyclone is in a totally sealed compartment is motor cooling going to be an issue and if so how do I maintain a sound proof enclosure and get air into it and out of it at the same time. A couple of folded baffles seems like the only way or will the motor not need cooling at all for the average hobby user?