I've been wrestling with a HF table top cabinet for over a year, and I'm surprised no one has brought up what I have found to be one of the biggest hurdles: compressed air flow. I have a 5 HP, 20 Gallon compressor big enough to run most tools in a weekend-warrior garage. And it does NOTHING in my blast cabinet. I need to look at some of these other ideas but I'm also working on piping an additional tank in line with mine to increase my capacity.
Anyone have sketches or pictures of how they've hooked up the dust collectors? I like the 5 gallon bucket idea.