DIY 55 Gallon Thien Baffle Dust Collection Cyclone Separator

In this video, I'm excited to show you how to make a cyclone out of a 55-gallon cardboard drum (Uline part S-7900). I'm building a Thien baffle-type cyclone, which is a more compact alternative to traditional commercial cyclones. Instead of a cone at the bottom, this design features a flat plate with a cut-out section near the inlet that allows dust to pass through. The design is based on J.P. Thien's original (https://www.jpthien.com/cy.htm).

I built a smaller version of this a couple of years ago for my shop vac, and it did a great job of separating out bigger chips and keeping them out of the filter. Now, I'm scaling up to match my new dust collection system, which I previously showed in another video (   • Can Just Anyone Install DIY Dust Coll...  ).

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0:00 Introduction
1:04 Adding the Inlet
6:37 The Thien Baffle
8:27 Hanging the Baffle
9:44 Adding the Outlet
10:11 Attaching the Baffle
10:50 Adding Viewports
13:31 Airflow Test Results (Before)
13:53 Adding the Cyclone to the DC System
16:19 Airflow Test Results (After)
16:37 Testing It Out
17:07 Outro