Dust Sniper (quiet extractor system)

Step 2 Cyclonic filtration - Overview

The details, instructions, and measurements of the actual cyclones have been up on the Flowering Elbow website for some time. Rather than have them repeated here, check the cyclone build guide steps on flowering elbow. 
 

Comments

[GordieGii]

Would this (http://www.leevalley.com/en/wood/page.aspx?p=30282&cat=1,42401) still be considered just a drop box?

[bongodrummer]

In my view, yes. Ok, it has a twist, in that the inlets are angled, but lots of fine dust will still come through. The spinning air inside will jostle up whatever is already in there a lot, every time you turn on the extractor. Don't get me wrong, it will certainly help, collecting about 85% of the waste material - that is a best case scenario, at low airflow rates. So it depends depends on what you connect it up to - the higher the airflow, the less useful it would be. According to Bill Pentz's research, at around 1000 CFM all the fine dust will get through, making it basically useless.

So yeah, it might help depending on your system, but is certainly not ideal.