A few years ago I bought a Dust Deputy cyclone with the buckets and everything, and it was most awesome. My vacuum at the time was a little 3HP Shopvac. However last year I bought a bigger 6.5HP Shopvac which pulls a lot more air as well as a lot more suction. This new vac overpowers the Dust Deputy, when turned on the hose going to the cyclone violently contracts.
In the manual, Oneida shows using two Dust Deputy cyclones in parallel to better handle a larger vac. They even sell a kit with three cyclones that you can hook up two vacs to to get even more air flow. Now I don’t know if the limitation here is CFM or if it’s the suction, but I just find this interesting to experiment.
So this past week the cyclones were on sale for only $40 at the local Menards so I bought a second one, and a plastic tub and some 2” PVC fittings, and came up with this just to see if it’d work.
It worked in principle, however the tub by itself isn’t strong enough to handle the suction if the hose is blocked. My next plan is to build a plywood box, and then use the plastic tub as a removable drawer to allow me to dispose of the sawdust.