Does that really work, Dan? I "installed" just exactly what you described in my little shop-under-the-stairs 6 months ago (which probably is not a 'real' 6-months since I only play at woodworking from time to time) in hopes that it might have done some good. But I still collect dust on all surfaces. The fan blows into the large rest-of-the-basement so there's no real "exhaust" worthy of the name. I was just this week feeling guilty for wasting electrons when I read your post. I have to admit, though, that I haven't done a quantitative before/after study.
John