This is a general idea. I'm sure everyone will have better ways to set it up. But a bucket and some PVC is all you need. I use Home Depot Black Garnet. The water trap catches most of the fine dust. Not all. Keep long tube, from cabinet outlet, to about 1 3/4 from bottom of bucket. Fill water to 1" deep. I have that screen in there between inlet/outlet to eliminate splash into outlet to vac. The water evaporates between my using cabinet. Before blasting, I empty the caked dust into garbage, fill to 1" and blast. In one pic you can see that my cabinet was not designed for a filter. I drilled a big hole high up away from intake end of cabinet and welded an exhaust pipe adapter/reducer onto a plate. There are media that this would not work well with, like soda. Anyway it's cheap enough to build and try/experiment.
Theory: Dusty air sucked out of cabinet by vacuum, blasts down into the water. The dust is trapped in water. Air continues/fills "air tight" bucket and is sucked into vac and out vac exhaust into the environment. Mine is outside, so no exhaust hose. If inside, need exhaust hose to outdoors. Keep in mind this system may still exhausts some dust and may have leaks. But it works pretty well. I had splashing at first, which was sucked into vac. Added screen to catch the droplets. Vac will still have moisture/some dust in it's filter and bottom of container. Must be checked periodically. A small vac, my neighbor was throwing a way, has lasted several years. It clears my pretty large cabinet fairly fast but I wonder what a bigger vac would do.
Anti-splashing must be experimented with. I.E. distance between long pipe and water and depth of water.... and maybe a screen. This is due to the power of your vac, length of hoses, media and cabinet volume.
Of course, when taking lid off, you have to rotate bucket, not lid.
Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn
