A half a dozen years ago I ditched the vac barrel and switched to a filter box. I ran the prototype ever since :o.
Attachment 446474
I finally got around to building a version 3. The fixture will mount closer to the ground / dust bin so the vertical hose will be shorter. There will be a large hose reel mounted above but, for now it looks like this.
Attachment 446472
I sucked up a gallon or so of random junk from the old shop vac barrel and the filter box looks like this :)
Attachment 446471
Here's the gist of the structure.
Attachment 446473