Dust Cyclone Separator (Shop Vac / Dust Collector) From a CD Spindle Cake Box and Toy Cone. Build Your Own Bucket Shopvac With Built in Cyclonic Separation! : 5 Steps (with Pictures) - Instructables
High Efficiency Cyclonic Dust Separator, 12 In. Dia With 2.5 In. Hose, 36 In. Long - Walmart.com