The dust separator seemed extremely effective with almost no carryover to the vacuum. I was anxious test and document how effective, so I followed the example of some LJers and set up a test. I measured the contents of the dust separator bin and dumped it on the floor. I also swept up the shop floor which included a collection of leaves blown in when the garage door was open. I had to remove the leaves manually since they blocked the suction nozzle.
The contents of the bin = ~3.5×15 x 15 = 787.5 cubic inches
The amount of dust in the vacuum after the test = ~5.5 cups = 79 cubic inches
Dust separator effectiveness for this test = 90%
Here are some before and after photos and video of the separator cyclone in action.
Volume of sawdust (~790 cubic inches)
Volume of fine dust in vacuum after the test:
Measuring the dust after shaking out the filter (~79 cubic inches):
Here’s a brief video of the cyclone separator in action:
And here’s a brief video of the dust/air flow in the air manifold.
- 90% is good but I was actually disappointed that the results weren’t even better. I had previously seen almost no perceptible carryover. Perhaps the heavy loading affected the efficiency. I cleaned out the vacuum and will monitor the results over a long term with normal loading.
- The heavy loading also seemed to cause dust to build up in the air manifold although it didn’t seem to block flow. I’ve added a curved baffle which I hope will keep the dust moving. More later.
-- Garry, North Carolina woodworker and engineer - The journey you're preparing for has already begun.