Thank's guys. I did the Google thing yesterday morning. Of coarse there are hundreds of posts to read that only lead to more questions. Though I have to admit I hadn't thought of using the images option.
The good news is that there is a forum for the Thien separator. I guess I will have to join. I really thought that there where more Creekers that have been through this already. Seems there are some issues with using the Thien separator with larger than 4" piping. I would like to keep mine at 5". That and I see that some that have done this have increases the width of the "drop slot". This is one of the things I was not sure on in regards to using the separator for larger CFM than shop vacs produce.
I was kind of hoping Phil would pop in here. I saw some post that he was going to be offering separators. I was curious if that ever got off the ground.
James