I was wondering if anyone ever built their own leaf vacuum machine. I have a removalable leaf box on my trailer, but I want to add a vacuum system to it. I got a pretty good idea on how to do it, but I need to know more about the fan blade operation part. How good (how tight) does the vacuum box have to be around the blade in order for it to operate effeciently? 1/4 inch, 1/2 inch, or something like 5/8s inch clearance around the blade? Or can it be more? Should the inlet port (the suctioning part) be placed at an angle as it enters the chamber, or can it lead straight into it? I know the blades have to be angled, will be a pain making, but can do it. If you have made one, does it work pretty well? Or did you give up and buy a mfg one?. If it works, do you have any written plans you would be willing to share (or sell?). Any pointers will be seriously appreciative. I figured, since I got plenty of down time at the moment, I can do this, so it would be ready in the near future. Thanks!