I wonder what would be a good idea for clear tubing stock for the cyclone when scaled to larger sizes? I guess it doesnt have to be clear, but it is fun to watch, and it would help inform the iterative process.
It will be interesting to see the comparative differences in impact on realized CFM compared to a dust deputy style cyclone or a thien baffle. An inexpensive anemometer can be had from Amazon for under $20, and I'm sure it would be plenty accurate for those purposes.
Clear tubing is definitely fun to watch but considering size needed for a 4"/6" inlet it would significantly increase the cost of this build, toying around with the idea of sonotubes since you can purchase 8"/12" x 48" ones for $10 @ HD/Lowes. For viewing pleasure I could 3D print a frame for a view window in the side of the tube, use a heat gun and the sonotube as a form to bend a sheet of acrylic to shape. These are just some ideas that I am tossing out of the top of my head.
Also I ordered a decent anemometer since this is getting more attention that I previously expected and I just happen to have a shopvac sized dust deputy sitting here beside me so I can do a comparison, just don't have access to a small thien baffle.