Cyclonic seperator/Thien baffle

http://webpages.charter.net/pjboling/awg/dust_collector_files/separator%20-%20cyclone%20and%20thien%20baffle%20plans.pdf
and process photo's here
http://www.woodworkingtalk.com/f27/building-thien-cyclone-garbage-can-separator-21983/#post172535