|Project by Garry||posted 12-28-2013 11:44 PM||6644 views||24 times favorited||11 comments|
I wanted a very compact dust separator that would fit within a vertical space of 21.5 inches under my workbench. I came up with a variation on the Thien separator that pulls the air down from the cyclone chamber and then out the side. I also needed it to work with my Ridgid WD4522 “tool box” vacuum (5 hp peak and 107 cfm). The overall size is 17” square by 21.5” tall using 2” PVC pipe for the air ducts.
I built an integral air manifold with a curved baffle to guide the air into the cyclone chamber with minimum turbulence. The clear acrylic forming the cyclone chamber extends down into the slot so there is no seam or step at the bottom of the chamber. A heat gun helps to relieve some of the stress in the acrylic but be careful not to overdo it.
The dust separator seems to work extremely well. I’ve used it for over a week cleaning up with the vacuum hose and taking exhaust from the table saw. The dust piles up more in the corners but there’s about 4-5 inches average depth in the pull out dust bin and no additional dust in the vacuum. I cleaned the vacuum spotless and replaced the filter, so next time I can tell exactly how much dust got by.
-- Garry, North Carolina woodworker and engineer - The journey you're preparing for has already begun.